Practice Test


1) In 1665, Robert Hooke first detected cells in


2) The word 'cell' was coined by


3) _________ had reported cells like human sperms, bacteria, red blood corpuscles etc, through microscopy.


4) __________ had discovered and named the nucleus in the cell.


5) Cytology is the study of


6) Cell theory was proposed by


7) _________ had coined the term protoplasm .


8) ________ applied the name protoplasm to the contents of plant embryonic cells.


9) Modern version of the cell theory states that


10) ________ had said that all cells arise from pre-existing cells.


11) Cells originate


12) Which cells are used as a stem cell ?


13) Exceptions to cell theory are


14) Each cell covered by a plasma membrane made up of


15) In the word totipotency, totus means


16) Genetic information is passed from one generation to other through


17) Capacity of a cell to differentiate into any


18) Which part of the cell divides first during cell division ?


19) In multicellular organisms, which type of cell division gives rise to tissues ?


20) Tissues combine to form


21) Organs combine to form


22) A multicellular organisms is larger due to


23) On the basis of intracellular organization what are the two different categories of living organisms ?


24) In the word prokaryotic, "pro" means


25) Cocci are


26) Vibrios are


27) Bacilli are


28) Spirilla are


29) What is the bacterial shape of Streptococcus pneumoniae ?


30) What is the function of cyanobacteria ?


31) __________ help in clinging to a support in bacteria.


32) What is the function of receptor molecules present on bacterial cell wall ?


33) Major component of the cell wall in bacterial prokaryotes is a polymer of


34) In prokaryotic cells outermost layer of cell envelope is called


35) Who discovered Gram staining method ?


36) Which stain is used to detect Gram positive bacteria ?


37) Mesosomes are the instructions of


38) Prokaryotic cell shows


39) Which of the following is absent in prokaryotes ?


40) Cell organelle present in both prokaryotes and eukaryotes is


41) A prokaryotic cell among the following is


42) In prokaryotes, the genetic material is a


43) DNA prokaryotic cell is generally


44) The prokaryotic cells are characterized by


45) A prokaryotic cell does not contain


46) Which two sub-units combine to form 70S ribosomes in prokaryotes ?


47) In prokaryotes, chromsomes are


48) In prokaryotic cell, the circular DNA molecule is connected to the plasma membrane through the


49) Prokaryotic cell does not show


50) Cell wall of prokaryotic cells contain


51) In prokaryotes, respiratory enzymes are located on


52) Aerobic respiration is performed by


53) In bacteria, plasmid is a/an


54) Plasmid is used in genetic engineering because


55) Which of the following is not present in prokaryotes ?


56) Plant cell differs from animal cell in having


57) Cell wall is present in


58) __________ perform photorespiration in plants.


59) Two adjacent cells are joined by


60) Middle lamella of cell wall is made up of


61) Plant cell wall possess


62) Cell wall of eukaryotic cells does not contain


63) The fluid mosaic model is a theory to explain the structure of


64) In fluid mosaic model of plasma membrane,


65) The thickness of lipid bilayer in plasma membrane is


66) What are the two types of membrane proteins in fluid mosaic model ?


67) Fluid mosaic model of plasma membrane proposes that


68) Cytoplasmic connections between adjacent cells are


69) Cytoplasmic bridges are


70) The aqueous portion of the cytoplasm is known as


71) Streaming movement of cytoplasmic matrix is called


72) The organelles known as the power house or energy store house of a cell are


73) Cell organelles involved in aerobic respiration are


74) Cristae are found in


75) Infolding in the cavity of mitochondrion is called


76) Oxysomes are present in the


77) Endoplasmic reticulumm is made up of


78) Which ER. is resposible for the process of protein synthesis ?


79) What is the function of smooth endoplasmic reticulum ?


80) Which among the following is the function of golgi apparatus ?


81) Which organelle gives rise to primary lysosomes ?


82) Photosynthetic pigment units are called


83) Photosynthetic site in plants are called


84) The plastids which produce colours other than green are


85) The word lysosomes has been derived from


86) Lysosomes have a battery of


87) Suicidal bags in the cell are


88) The function of lysosomes is


89) Which cell organelle is involved in the process of exocytosis ?


90) The process in which cell digest its own organelle is called


91) Autolysis is brought about by


92) Lysosomes help in the removal of


93) Main function of lysosomes is


94) Primary lysosomes combine with endocytosis vacuole to form


95) Residual body contains


96) Primary lysosomes fuse with unwanted cell organelle to form


97) Sphaerosomes are helpful in


98) Peroxisomes contain enzymes for the synthesis of


99) Glyoxysomes are micro bodies containing enzymes for oxidation of


100) Ribosomes are the centres for


101) Ribosomes are composed of


102) Ribosomes are associated with


103) In animal cell, _______ help in spindle formation during cell division.


104) _________ plays a vital role in the formation of flagella.


105) A mature palnt cell has


106) Vacuole is bound in a cell by a membrane called as


107) In paramoecium, homeostasis is maintained by


108) The only structure present in animal cell is


109) Non-membranous organelle is


110) Organelle involved with lipid and lipoprotein synthesis is


111) which statements is true for animal cell ?


112) Which cell organelle reduces the number of other cell organelles ?


113) Animal cell is differentiated from plant cell in having


114) The organism in which body is made of only one cell is


115) Division of labour is present in


116) The main controlling cell organelle is


117) The prokaryotic cells,


118) In prokaryotic cell, nuclear material is known as


119) Eukaryotic cell has DNA associated with


120) The living part of a cell is known as


121) Nucleus is clearly visible during


122) In Paramoecium, nucleus is


123) Multinucleate cells are found in


124) Polynucleate cells of the animals are called


125) Polynucleate cells of the plant are known as


126) In glandular cells the nucleus occupies ________ position.


127) In adipose tissue cells, the nucleus occupies ________ position.


128) Nucleus is ________ in cuboidal cell.


129) Nucleus is ______ in columnar cells.


130) Nucleus is _______ in Vorticella.


131) The size of the nucleus of a cell depends on


132) The structure of the nuclear membrane facilitates


133) Outer layer of nuclear membrane is in continuation with


134) Nuclear envelope is also called


135) The inner nuclear membrane is associated with the dense material known as


136) Space between two nuclear membrane is called


137) The perinuclear space is about


138) The perinuclear space is usually about


139) Callan and Tomlin first observed the nuclear pores in the nuclei of


140) The nuclear pores are enclosed by an electron dense ring or cylinder called


141) The nuclear pores together with annulus is known as


142) The annuli of the nuclear pore act as a


143) The selective permeability of nuclear membrane is due to


144) _____ and ________ first described the presence of fibrous material on inner surface of inner nuclear membrane of Amoeba proteus.


145) Harris and James described fibrous lamina on inner surface of inner nuclear membrane of


146) Fibrous lamina is composed of


147) Which of the following is NOT CORRECT about nuclear envelope ?


148) The outer nuclear membrane gives off vesicles which fuse to give rise to


149) Within nuclear membrane a transparent, semi-solid granular and slightly acidophilic ground substanece is present, known as


150) Nucleoplasm is also called


151) Karyolymph is a


152) Nucleoplasm is continuous with cytoplasm through


153) Nucleolus is involved in the synthesis of


154) The large-sized nucleoli occur in


155) The smaller-sized nucleoli occur in


156) Nucleoli do not occur in


157) Liver cells have _________ nucleoli.


158) A dense homogenous body without any limiting membrane in nucleus is called


159) The nucleoplasm contains many thread like coiled and much elongated structure known as


160) Chromatin material consists of DNA associated with


161) Chromatin shows deep colouration when stained with ______ stain.


162) Light satined and diffused region of chromatin is known as


163) The darkly satined condensed region of chromatin is known as


164) The chromatin is made up of small repeating units known as


165) Chromosomes were first seen by


166) During cell division chromatin condenses to form


167) The term chromosomes was first coined by


168) Nucleoplasm is continuous with cytoplasm through


169) Chromosomes have an ability of


170) What is absent in erythrocytes ?


171) Well organized nucleus is absent in


172) The nucleus contains


173) Number of chromosomes are ____________ for a species.


174) Study of ____________ helps in the determination of phylogeny and taxonomy.


175) Robert Hooke recorded his work in his book named


176) Stem cells have the property of self


177) The basic unit of life is


178) What is the function of cell wall ?


179) Chromatophores are found in


180) In 70S type ribosomes, 'S' stands for


181) Mitochondria are absent in


182) Fluid mosaic model was proposed by


183) Protoplasm is a


184) Golgi bodies perform the function of


185) The term Lysosomes coined by


186) During fertilization which enzyme dissolves the protective covering of ovum ?


187) Which type of ribosomes are Found in eukaryotes ?


188) Usually nucleus remain located in the


189) _________ and __________ first observed the nuclear pores in the nuclei.


190) Oxysomes are also called


191) Celltilar totipotency is by


192) In chloroplasts, chlorophyll is present in the


193) The telomeres of eukaryotic chromosomes
consists of short sequence of


194) The main organelle modification and outing
of newly synthesized proteins to their
destination


195) Chemiosrrfotic theory synthesis in the
chloroplasts and mitochondria is based on


196) Centromere Is required for


197) According to widely accepted “fluid mosaic
model” cell membranes are semi-fluid, where lpids and integral proteins can diffuse
randomly.
In recent years,thismodel has beenmodified
in several respects. In this regard, which of
the following statement is incorrect ?


198) A student wishes to study the cell structure
under a light microscope having 10X
eyepiece and 45X objective. he should
illuminate the object by which one of the
following colours of light so as to get the
best possible resolution ?


199) Select the wrong statement from the
following.


200) Which one of the following is not a
constituent of cell membrane?


201) Keeping in sithe ‘fluid mosaic model1
tor
the structure of cell membrane, which one
of the following statements is,correct with
respect to the movements oflipids and
proteins one lipid monolayer to the the other
( described as flipflop movement)


202) The two of ribosome remain united at a
critical level of


203) Vacuole in a/jsteal eetl


204) In germinating seeds fatty acids are
degraded degraded exelusively in the


205) Plasmodesmata are


206) Cytoskeleton is made up of


207) Middle lamella is composed mainly of


208) Which one of the following structure between two adjacent cells is aa transport
pathway?


209) Which one of the following has its own
DNA?


210) The main area of various types of activities
of a cell is a


211) The plasma Membrane consists of mainly


212) An eiabomte network of filamemous
proteinaceous structures present in the
cytoplasma which helps the maintenance
of cell shape is called


213) Important site for formation of glycoproteins
and glycolipids is


214) Peptide synthesis inside a cell takes place
in


215) Which one of the following is not considered
as a part of the endomembrane system?


216) Ribosomal RNA is actively synthesized in


217) Which one of the following is wrong
statement ?


218) What is true about ribosomes?


219) Select the correct statement from the
following regarding cell membrane.


220) Which one of the following structures is an
organelle within an organelle?


221) Which one of the following cellular parts
is correctly described?


222) The major role of minor elements inside
living organisms is to act as


223) In which one of the following enzymes,
is copper necessarily associated as an
activator?


224) Which one of the following statements
regarding enzyme inhibition is correct?


225) The catalytic efficiency of two different
enzymes can be compared by the


226) Carbohydrates, the most abundant
biomolecule on earth, are produced by


227) Nucleotides are building blocks of nucleic
acids. Each nucleotide is a composite
molecule formed by


228) Which of the following is the simplest
amino acid?


229) Enzymes, vitamins and hormones
can be classified into a single category of
biological chemicals, because all of these


230) An organic substance bound to an enzyme
and essential for its activity is called


231) About 98 percent of the mass of every living
organism is composed of just six elements
including carbon, hydrogen, nitrogen,
oxygen and


232) Modern detergents contain enzyme
preparations of


233) A competitive inhibitor of succinic
dehydrogenase is


234) Cellulose is the major component of cell
wall of


235) Carbohydrates are commonly found as
starch in plants storage organs. Which of
the following five properties ofstarch (1-5)
make it useful as a storage material?
(1) Easily translocated.
(2) Chemically non-reactive.
(3) Easily digested by animals.
(4) Osmotically inactive.
(5) Synthesized during photosynthesis.
The useful properties are


236) Three of the following statements about enzymes are correct and one is wrong.
Which one is wrong?


237) Which one is the most abundant protein in
the animal world?


238) Which one of the following biomolecules is
correctly characterized?


239) In the somatic cell cycle


240) If you are provided with root-tips of onion
in your class and are asked to count the
chromosomes, which of the following
stages can you most conveniently look into
?


241) Which one of the following precedes
reformation of the nuclear envelope during
M phase of the cell cycle?


242) At what stage of the cell cycle are histone
proteins synthesized in a eukaryotic cell?


243) Synapsis occurs between


244) During mitosis, ER and nucleolus begin to
disappear at


245) Select the correct option with iMpit; to
mitosis.


246) At metaphase attached to the spindle
fibres by their


247) During gamete formation, the enzyme
recombinase participates during


248) The given figure is the representation of a
certain event at a particular stage of a type
of ceil division. Which is this stage ?


249) Identify the meiotie slsjp in which the
homologous ehromo-1 senses separate
while the sister Chromatids remain
associated at their centromeres.


250) Whichch is substitution of mitochondria in
E. coli ?


251) In eukaryotic cells, the amount of basic
proteins is often Mad to be


252) Winch one of the following is a correct
statement ?


253) Animal cell differs from plant cell in
possessing


254) The prokaryotic cells are characterised by


255) Prokaryotic ribosomes are


256) Which is absent in prokaryotes ?


257) ‘Cell theory’ was given by


258) Who among the following concluded that
“every cell comes from a pre-existing cell”
?


259) The basic postulates of the cell theory are
(i) All living organisms consists of one or
more cells.
(ii) The cell is the basic unit of structure
and function of all living organisms.
(iii) All cells arise from pre-existing cells.
These were proposed by


260) Dutrochet has given the concept about cell
in


261) Which one of the following cell is connecting
link between prokaryotes and eukaryotes,
therefore, called as mesokaryotes?


262) Names of Schleiden and Schwann are
associated with


263) Electron microscope has a high resolution
power. This is due to


264) Binding of specific protein on regulatory
DNA sequence can be studied by means of


265) Which is correct about cell theory in view of
current status of our knowledge about cell
structure?


266) DNA is present in


267) In mitochondria, cristae act as sites for


268) Oxysomes are located inside


269) Which of the following organelles does not
contain RNA?


270) ER is attached with


271) Ribosome mainly has


272) Which of the following organelle is common
in plant and animal cells?


273) The non-membranous organelles are


274) Suicide bags are also called


275) All cells contain


276) Golgi bodies are absent in


277) Which of the following gives mechanical
support to the cell?


278) In ribosomes, letter S signifies


279) Primary lysosomes in a cell are formed by


280) The latest model for plasma membrane is


281) Polyribosomes are aggregates of


282) Ribosomes were discovered by


283) All plastids have similar structure because
they can


284) Which one is Apparato reticolarel


285) In double helix of DNA, the two DNA
strands are


286) RNA does not possess


287) Which is not consistent with double helical
structure of DNA?


288) A nucleotide is formed of


289) In RNA, thymine is replaced by


290) The unit of nucleic acid is


291) A segment of DNA has 120 adenine and
120 cytosine bases. The total number of
nucleotides present in the segment is


292) DNA is composed of repeating units of


293) Adenine is a


294) Amino acids are produced from


295) Which is distributed more widely in a cell?


296) Amino acids are mostly synthesised from


297) Glycogen is a polymer of


298) Which is wrong about nucleic acids?


299) Which of the following nucleotide sequences
contains 4 pyrimidine bases?


300) Which purine base is found in RNA?


301) What are the most diverse molecules in the
cell?


302) In which of the following groups are all
polysaccharides?


303) Lactose is composed of


304) Cellulose, the most important constituent of
plant cell wall is made up of


305) Which of the following have carbohydrate
as prosthetic group?


306) ATP is


307) In DNA, when AGCT occurs, their
association is as per which of the following
pair?


308) DNA is mainly found in


309) Similarity in DNA and RNA is that


310) In three dimensional view the molecule of
t-RNA is


311) Length of one loop of B-DNA is


312) Anticodon occurs in


313) Extranuclear DNA is found in


314) In a DNA percentage of thymine is 20% then
what will be percentage of guanine?


315) The following ratio is generally constant for
a given species


316) Which form of RNA has a structure
resembling clover leaf ?


317) Amino acid sequence, in protein synthesis
is decided by the sequence of


318) Which antibiotic inhibits interaction
between tRNA and wRNA during bacterial
protein synthesis?


319) Antiparallel strands of a DNA molecule
means that


320) One turn of the helix in a B-form DNA is approximately


321) In DNA helix, cytosine is paired with
guanine by


322) Association of a mRNA with several
ribosomes is called


323) Which of the following carbohydrates is
absent in honey?


324) Which of the following is not an essential
amino acid ?


325) Which of the following is a polysaccharide?


326) The most abundant minerals of a living cell
are


327) Enzymes having slightly different molecular
structure but performing identical activity
are


328) Which is a typical example of ‘feedback
inhibition’?


329) Co-factor (prosthetic group) is a part of
holoenzyme. It is


330) Some of the enzymes, which are associated
in converting fats into carbohydrates, are
present in


331) Enzymes are not found in


332) Which amino acids are present in histones
?


333) Which is non-reducing sugar ?


334) The stack of vesicles found inside plastids
in


335) Sucrose, a common table sugar, is composed
of


336) Which is not true about sphaerosomes ?


337) Prokaryotic ribosome has sedimentation
coefficient of


338) Which of the following shows semipermeability?


339) Surrounding membrane of vacuole is called


340) The protein present in wheat grain is


341) Suicidal bag of plant cell is


342) The biomembrane tonoplast is


343) The cell drinking is


344) Cells are connected by plasmodesmata, the
system is


345) Radiosotopes used to detect newly
synthesized proteins


346) Enzymes are


347) Sucrose is an example of


348) What is the structure of glucose?


349) A chromosome having centromere at the
middle is called


350) In 1831, Robert Brown described


351) Cuticle is present in


352) Which cell organelle is not bound by any
membrane ?


353) Which of the following organelle is common
between plant and animal?


354) Which of the following is correct in plant
cell ?


355) Sphaerosomes contain


356) Most of the cell membranes are principally
composed of


357) Protein denaturatjon takes place by the
activity of


358) Site of gluconeogenesis is


359) Most abundant lipid in cell membrane is


360) Cholesterol is a


361) Most common monomer of carbohydrate is


362) In meiotic cells, homologous chromosomes
synapse during


363) How many generations of mitosis are
required to produce 128 cells from a single
cell of a root tip ?


364) During diplotene stage in meiosis


365) Select the correct sequence of stages of
meiotic-I prophase


366) In cell cycle, different phases are in the
following sequence


367) Genetic recombination during meiosis takes
place at


368) Which is not true for anaphase ?


369) In which phase proteins for spindle fibre
formation are synthesized ?


370) Cell plate formation starts from


371) The drug colchicine has inhibitory effect on
cell cycle in which stage ?


372) b-oxidation of fatty acids occurs in


373) Assembly of two subunits 40 S and 60 S of
the ribosome results in


374) The sedimentation coefficient of complete
ribosome in bacterial cell is


375) Perspiration contains an enzyme that kills bacteria. The enzyme is


376) Pure fractions of cellular components can
be isolated by


377) Which of the following is characteristic of
phospholipids of plasma membrane?


378) The simple polyhydroxy ketone molecule
containing 3-7 carbons is a


379) The type of cell junction which facilitates
cell to cell communication is


380) The dry weight of macromolecules like
DNA, RNA and proteins can be determined
using


381) An example of non-competitive inhibition
is


382) The type of bond involved in the formation
of sodium chloride is


383) The sugar in DNA is


384) Most abundant constituent of a cell that has unique structure is


385) In pachytene stage of meiosis, the
chromosomes appear


386) In mitosis, nucleolus and nuclear membrane
disappears at


387) Formation of bivalent during meiosis occurs
at


388) The process of cytokinesis refers to the
division of


389) Early prophase is also called spireme stage.
In this stage


390) Which of the following is the longest phase
of meiosis?


391) Tetrad is made of


392) Given : (1) chromatid, (2) monad, (3) dyad,
(4) daughter chromosomes. During mitosis
the correct sequence of stages passed
through is


393) Meiosis I is reductional division. Meiosis II
is equational division due to


394) Segregation of Mendelian factor (Aa) occurs
during


395) Mitotic anaphase differs from metaphase
in possessing


396) In meiosis, the daughter cells differ from
parent cell as well as amongst themselves
due to


397) Number of chromatids at metaphase is


398) Meiosis II performs


399) In a somatic cell cycle, DNA synthesis takes
place in


400) Which statement best explains the
evolutionary advantage of meiosis?


401) When paternal and maternal chromosomes
change their materials with each other in
cell division this event is called


402) During cell division in apical meristem, the
nuclear membrane appears in


403) Microtubule is involved in


404) Spindle fibre unite with which structure of
chromosomes?


405) Best material for the study of mitosis in
laboratory is


406) Which one of the following is an exception
to cell theory?


407) Electrons used in electron microscope are
of the wavelength


408) Which one of the following is not a
characteristic of active transport ?


409) Which of the following is not a true organelle
?


410) The main lipid component of the plant cell
membrane is


411) Detoxification of lipid soluble drugs and other harmful compounds, in endoplasmic
reticulum is carried out by


412) Which one of the following is not a cell
inclusion ?


413) Zone of exclusion surrounds


414) Consider the following statements and select
the correct option.
(A) The endomembrane system includes plasma
membrane, ER, Golgi complex, lysosomes
and vacuoles.
(B) ER helps in the transport of substances,
synthesis of proteins, lipoproteins and
glycogen.
(C) Ribosomes are involved in protein synthesis.
(D) Mitochondria help in oxidative phosphorylation and generation of ATR


415) In which of the following linear polymeric
biomolecule, the two ends are described as
reducing and non-reducing ends ?


416) At its isoelectric point a protein has


417) Which of the following statements regarding
coenzymes and prosthetic groups of enzymes
is not true?


418) If the length of a double helical DNA is
1.7 meters. The number of base pairs present
in the DNA is


419) If a highly purified sampleof rat liver DMA
is dissolved in pure pH of the resulting
solution will be


420) DNA contains naeleobases, sugar and
phosphate. Removal of wlffish among these
from a DNA sample will ‘not significantly
length of the DNA ?


421) RuBisCo is the most abundant enzyme in the
world and preient in ffflf high concentration
in chloroptats. It is required is very high
concentration for photosynthesis because it


422) With reference to enzymes, which of “the
following is true?


423) The tightly bound non proteinaceous organic
compound is


424) Example of a typical homopolysaccharide is


425) Inulin is a polymer of


426) Mannitol is


427) Which one is an imino acid ?


428) In a polysaccharide, the individual
monosaccharides are linked by a


429) Select the incorrect statement.


430) The number of microtubules in a fiagellum
including those sharing three protofilaments
with eae& other is


431) Which of the following match is correct?


432) Aleuroplasts in a cell Store


433) The size of mitochondrion in plant celiis


434) Digestive enzyme hydrolases are present in


435) Consider the following statements.
(A) Plant cells have centrioles which are
absent in almost all animal cells.
(B) Ribosomes are the site of protein
synthesis.
(C) The middle lamella is a layer mainly of
calcium carbonate which holds the
different neighbouring cells together.
(D) In animal cell steroidal hormones are
synthesized by smooth endoplasmic
reticulum.
Of the above statements


436) With reference to enzymes, turnover number
means


437) Essential: non-essential amino acid is


438) Find out the wrongly matched pair.


439) Which of the following is not a conjugated
protein ?


440) The energy content in Kcal/g of carbohydrate
: protein : triglycerol respectively is
approximately in the ratio of


441) Formation of both peptide and glycosidic
bonds involve


442) Which factor is responsible for inhibition
of enzymatic
process during feed back?


443) Purines possess nitrogen at


444) Which one is diaminodicarboxylic amino
acid ?


445) What are those structures that appear as ‘beads-on-string’ in the chromosomes when viewed under
electron microscope?


446) The two polynucleotide chains in DNA are


447) Centrosome is not present in


448) Channel proteins are involved in


449) Part of chromosome after secondary constriction is called


450) Tubulin protein occurs in


451) Quantasomes are found in


452) In which one of the following would you expect to find glyoxysomes?


453) Single stranded DNA is found in


454) Ribosomes that occur exclusively in mitochondria is


455) Number of protofilament in microtubule is


456) …A… are granular structures first observed under electron microscope as dense particles by …B… (1953).
Here, A and B refer to


457) Middle lamella is present


458) Rough endoplasmic reticulum differs from smooth walled endoplasmic reticulum due to the presence of


459) A widely accepted, improved model of cell membrane is


460) Organelle important in spindle formation during nuclear division is


461) Consider the following statements and choose the correct one


462) The backbone of RNA consists of which of the following sugar?


463) Chemiosmotic theory of ATP synthesis in the chloroplasts and mitochondria is based on


464) Polysome is formed by


465) In eukaryotic cell, plasmodesma is lined by plasma membrane. It encloses tubular extension of
endoplasmic reticulum called


466) The factors which set the limit of cell size or volume are
I. nucleo-cytoplasmic or kern-plasma ratio
II. rate of metabolic activity
III. ability of oxygen and other materials to reach every part of the cell
IV. ability of waste products to pass to the outside
V. ratio of surface area to the volume of the cell
Identify the correct set of statements


467) The difference between rough endoplasmic reticulum and smooth endoplasmic reticulum is that rough
endoplasmic recticulum


468) Cilia are


469) The enzyme DNA polymerase was discovered by


470) Plant cells possess


471) Which of the following statements are correct?
I. Occurrence of different types of tissues, organs and organ system results in division of labour
II. A new cell always develops by the division of a pre-existing cells
III. Cells are totipotent
IV. Cell is the smallest unit, capable of independent existence and performing the essential functions of life
The correct option is


472) Which of the following features are correct regarding ribosomes?
I. Non-membrane bound
II. Absent in plastids and mitochondria
III. Present in the cytoplasm and RER
IV. Take part in protein synthesis
The correct option is


473) In prokaryotic cell,
I. enveloped genetic material is present
II. ribosomes are absent
III. an organised nucleus is absent
The correct option is


474) In a DNA molecule, distance between two based is


475) Antiparallel strands of a DNA molecule means that


476) Arrange the following steps in a correct sequence as per Gram’s staining technique
I. Treatment with 0.5% iodine solution
II. Washing with water
III. Treatment with absolute alcohol/acetone
IV. Staining with weak alkaline solution of crystal violet
The correct sequence is


477) In eukaryotes, basic structural unit made up of histone and DNA is


478) Choose the correct statement from the codes given below
I. Separation from extracellular medium allows the cells to maintain its chemical pool, orderliness of
structure and reactions in contrast to disorderly distribution and randomly interacting molecules in the
extra-cellular medium
II. Cells are unable to recognise one another due to the present of specific chemicals on their surface
III. Cells of plant tissues are often connected with one another through cytoplasmic bridges called
plasmodesmata
IV. Different cells of an organism communicate as well as exchange materials with one another


479) DNA multiplication is called


480) Ribosomes are found in


481) In protoplasm, fat store in the form of


482) Spindles are formed by


483) Glycocalyx (mucilage sheath) of a bacterial cell may occur in the form of a loose sheath called …A… or it
may be thick and tough called …B…
Choose the correct pair from the given option


484) Function of rough endoplasmic reticulum is


485) Comparing small and large cells, which statement is correct?


486) Unicellular organisms are


487) Stain used by Feulgen to stain DNA is


488) Out of A-T, G-C pairing, bases of DNA may exist in alternate valency state owing to arrangements called


489) Robert Hooke used the term cell in the year


490) Okazaki fragments are produced during the synthesis of


491) Cellulose, the most important constituent of plant cell wall is made up of


492) In flagella membrane, which enzyme catalysis ATP activity?


493) During the replication of DNA, the synthesis of DNA on lagging strand takes place in segments. These
segments are called


494) In DNA of certain organisms, guanine constitutes 20% of the bases. What percentage of the bases would be
adenine?


495) The term ‘protoplasm’ was coined by


496) Select the incorrect statement


497) Which of the following is responsible for the origin of lysosome?


498) In his bacteriophage experiments, Hershey and Chase demonstrated that DNA is genetic material in


499) The length of DNA molecule greatly exceeds the dimensions of the nucleus in eukaryotic cells. How is this
DNA accommodated?


500) Diameter of DNA is constant due to


501) Which of the following sugars is found in nucleic acid?


502) Categorise the given statements as true and false
I. Kingdom - Monera have eukaryotic organisation
II. E.coli is a eukaryote
III. Organised nucleus is present in eukaryotes
IV. Paramecium is a prokaryote


503) Which of the following statements are correct about prokaryotic genetic material (DNA)?
I. DNA is naked, that is without histones
II. DNA is usually circular/single chromosome
III. Outside the genomic DNA, small circular DNA is also present in many bacteria
IV. The smallest DNA are called plasmids


504) Golgi body originates from


505) Extension of plasma membrane in prokaryotic cell is


506) A biomembrane consists of lipids, proteins carbohydrates and water. These lipid molecules are


507) Thread like protoplasmic projections on the free surface of absorptive cells (such as intestinal cells) are
called


508) …… are an exception to cell theory


509) Structural lipids of cell membrane are


510) Quantasomes are present in


511) The chemical substances found most abundantly on the middle lamella are released into the phragmoplast
by


512) According to widely accepted ‘fluid mosaic model’ cell membranes are semi-fluid, where lipids and
integral proteins can diffuse randomly. In recent years, this model has been modified in several respects.
In this regard, which of the following statement is incorrect?


513) Okazaki fragments are joined in a correct sequence by


514) Which of the following cell organelles stores hydrolytic enzymes?


515) Cell is the fundamental structural and functional unit of all living organisms. This was evidenced by the
fact that


516) What is mitoplast?


517) Assembly of two subunits, 40S and 60S of the ribosome is


518) Cell membrane of eukaryotes is composed of


519) Sigma factor is related to


520) The figures of cork cells as seen by Robert Hooke were published in the book


521) Robert Hooke thought about the cells that


522) Ribosomal RNA (rRNA) is synthesised in


523) Which of the following organelles does not contain RNA?


524) Read the following statements and identify the correct option given.
I. In prokaryotic cell, the nuclear membrane, chloroplast, mitochondria,
microtubules and different kinds of pili are absent.
II. In eukaryotic cell, the nuclear membrane, chloroplast, mitochondria and pili are
present.
III. In prokaryotic cell, the ribosome is of 70 S type and in mitochondria of
eukaryotic animal cell, the ribosome is 80 S type


525) Schleiden (1838) proposed that cell is the structural and functional unit of life. His idea was a/an


526) In DNA, which of the following is absent?


527) Which of the following enzymes has/have haeme as a prosthetic group?
I. Catalase
II. Carboxypeptidase
III. Succinic dehydrogenase
IV. Peroxidase


528) In prokaryotes, chromatophores are


529) hnRNA undergoes two additional processing. Out of which, in one of them an unusual nucleotide (methyl
guanosine triphosphate) is added to the 5’ – end of hnRNA. This is known as


530) In prokaryotic cells, an organelle like the one is eukaryotic cells is


531) Amino acid binding site in tRNA is


532) Protoplasm of a eukaryotic cell is called


533) In which cell organelles, a lipoprotein covering is absent?


534) The infoldings in mitochondria are known as


535) Which one is the correct statement about the bacterial cell envelope?


536) Arrange the following cells in an ascending order of their size and select the correct option
I. Ostrich eggs
II. Mycoplasma
III. Bacteria
IV. Human RBCs


537) Eukaryotes includes


538) Which enzyme joins DNA fragments?


539) What is C-value paradox?


540) If a length of DNA has 45,000 base pairs, how many complete turns will the DNA molecule takes?


541) The distance between two base pairs in DNA is


542) Analyse the following pairs and identify the correct option given.
I. Chromoplasts – Contain pigments other than chlorophyll
II. Leucoplasts – Devoid of any pigments
III. Amyloplasts – Store proteins
IV. Aleuroplasts – Store oils and fats
V. Elaioplasts – Store carbohydrates


543) Which of the following is not relevant to the structure of double helical DNA?


544) RNA has uracil instead of


545) Which of the following cellular organelles is/are bound by a single membrane?
Peroxisomes, lysosomes, mitochondria


546) Red colour of tomato is due to


547) What is the difference between RNA and DNA?


548) Cell membrane was discovered by Schwann (1838) but it was named by


549) Which of the following is not present in cell vacuoles?


550) If a cell has a twice as much DNA as in a normal functional cell it means that the cell


551) Within the nucleus DNA is organised along with proteins into material called


552) The molecular action of UV light is mainly reflected through


553) Three of the following statements regarding cell organelles are correct, while one is wrong. Which one is wrong?


554) Plasmodesmata connections helps in


555) Which of the following pair is mismatched?


556) The rough endoplasmic reticulum (RER) in the cells are because of the presence of


557) Which one of the following is the correct matching of three items and their grouping category?


558) The two subunits of ribosome remain united at a critical ion level of


559) Study of form, structure and composition of cells is called


560) Acid hydrolase is found in


561) Which of the following maintains continuity between the water and lipid phases inside and outside the
cells?


562) The mineral present in cell wall is


563) Lipid bilayer is present in


564) Endoplasmic reticulum is in continuation with


565) Which of the following is the filler substance of the matrix of eukaryotic cell?


566) Which of the following does not contain DNA?


567) The fluidity of membranes in a plant in cold weather may be maintained by


568) In a double helix of DNA molecule of 10 coils, if there are 30 adenine nitrogen bases, what is the number of
guanine nitrogen bases?


569) The study related to the structure and function of a cell is called


570) Pits present in the wall of plant cells helps to produce a protoplasmic continum, called…… amongst cells


571) Main component of ribosome are


572) Statements
I. The four nucleotide bases are not necessarily present in DNA in exact equal
proportions.
II. The total amount of purines are equal to the total amount of pyrimidines.
III. DNA ligase enzyme act to hydrolyse or breakdown a polynucleotide chain into
its component nucleotides.
IV. Nuclease enzymes are capable of restoring an intact DNA duplex.
Of the above statements


573) Which is not true about spherosomes?


574) Elaioplasts store


575) Which of the following is the function of cytoskeleton?


576) Vital stains are employed to study


577) Which one of the following is not a plastid?


578) Which of these is wrongly matched?


579) In DNA structure, Nobel Prize was given to


580) Phagocytosis and pinocytosis are collectively termed as


581) The following ratio is generally constant for a given species


582) Cell theory is not applicable for


583) In multicellular organisms, the 70 S ribosomes are found in the following parts of the cells


584) Ribosomes are particles about 200Å units in diameter consisting of protein and RNA. The percentage of
protein and RNA respectively is


585) The term ‘cytoplasm’ and ‘nucleoplasm’ were given by


586) Which is not true about prokaryotes?


587) Nuclear membrane is continuous with


588) Protein synthesis takes place in


589) Structure of nuclear membrane help in


590) The ATP synthase of chloroplasts is like that of


591) Protoplast denotes the ….. of protoplasm present in a cell


592) An organism exclusively with 70 S type of ribosomes contains one of the following


593) In the DNA molecule


594) The Z-DNA helix is left handed and has a structure that repeats every


595) The inward movement of ions into the cells is ……
and the outward movement is….


596) Centrioles arise


597) If there are 120 adenine molecules in a B-DNA double helical structure showing 20 coils, what is the
number of pyrimidine nucleotides forming three hydrogen bonds in it?


598) Flocculation or coagulation of protoplasm is the


599) Nucleolus is


600) The process by which cells loose their specialisation is called


601) Which one of the following nitrogenous bases is seen only in RNA?


602) Golgi complex works for


603) Which statement is not true about prokaryotes?


604) Which is not correct according to Chargaff’s rule?


605) During DNA replication in prokaryotes, DNA is anchored to


606) Correct sequence of layers of bacterial cell envelope is


607) What is true about tRNA?


608) The endoskeleton of cell is made up of


609) Autonomic genome system is present in


610) Choose the correct statements
I. Passive cells are larger in size
II. Larger cells have lower surface volume ratio
III. To remain active, larger cells are either cylindrical in shape or possess several extensions of the cell
membrane, like microvilli
IV. Microvilli are found in all those cells, which are active in absorption
V. Microvilli (membrane infoldings) occurs in transfer cells found in plants in the region of absorption or
secretion of nutrients
Option containing all correct statements is


611) Prokaryotic cells are generally….. and multiply more rapidly than the eukaryotic cells


612) Animal cell contains non-membrane bound organelles called ……which helps in cell division


613) In prokaryotes, genetic material is


614) Which of the character is not applicable to tRNA?


615) Choose the incorrect match.


616) Which of the following is the site of lipid synthesis?


617) Which of the following cell organelles is rich in catabolic enzymes?


618) There are special proteins that help to open up DNA double helix in front of the replication fork. These
protein are


619) Select the right option which relates to Schwann regarding the following statement
I. He reported that cells have a thin outer layer which is today known as plasma membrane
II. Cell wall is a unique character of the plant cell
III. Body of plants and animals are composed of cells and product of cells
Choose the correct option from below


620) Within the cell, ribosomes are found in


621) Which of the following characteristic is correct about cell of plant cells?


622) Which one is single membrane cell organelle?


623) Middle lamella is composed of


624) When a molecule moves across a membrane independent of other molecules, the process is called


625) Meselson and Stahl experiment proved


626) Which one of the following remains absent in prokaryotes?


627) Thylakoids occur inside


628) Cell organelle common in Monera and Protista is


629) Ribozyme was discovered by


630) Cellular respiration is carried out by


631) Which of the following enzyme is used in DNA multiplication?


632) Which of the following is correct for middle lamella of eukaryotic cell?


633) Polyribosomes are aggregation of


634) Subunits in prokaryotic ribosomes are


635) Plant cell may be without


636) Robert Hooke developed a microscope with which he studied the internal structures of the cell. His work
is famous for the study of


637) The enzyme which helps to cut one strand of DNA duplex to release tension of coiling of two strands is


638) Cell wall consists of


639) Which cell organelle is present in both prokaryotic and eukaryotic cell?


640) Flagella of prokaryotic and eukaryotic cells differ in


641) The surface of the endoplasmic reticulum (ER) is covered with


642) Keeping in view the ‘fluid mosaic model’ for the structure of cell membrane, which one of the following
statement is correct with respect to the movement of lipids and proteins from one lipid monolayer to the
other (described as flip-flop movement)?


643) In prokaryotic cells,


644) Which of the following statements regarding cilia is not correct?


645) Glycocalyx is associated with


646) Cell theory was formulated by


647) The main organelle involved in modification and routine of newly synthesised proteins to their destination
is


648) Plasma membrane helps in


649) Which of the following is a part of endomembrane system of eukaryotic cell?


650) I. It is the extension of plasma membrane into the cytoplasm
II. It helps in cell wall formation, DNA replication, respiration, secretion processes, increases the surface
area of plasma membrane and enzymatic contents. It also helps in cytokinesis
III. It I the characteristic of bacterial cells
The above features are attributed to bacteria


651) Solenoid is a structure of


652) DNA strand which is formed continuously in 5’ → 3’ direction is called


653) Which of the following organelle is present in highest number in secretory cells?


654) Ribose sugar is present in


655) All the statements are correct for prokaryotic cells, except


656) Which of the given statements are correct?
I. Escherichia coli is a Gram (−) bacteria
II. Bacillus subtilis is a Gram (+) bacteria
III. Working of the Gram’s stain in Gram (−) bacteria is due to high lipid content of the cell wall, which gets
dissolved in organic solvents like acetone
Choose the correct option


657) Ribosomes are attached to endoplasmic reticulum through


658) During replication of DNA, Okazaki fragments are formed in the direction of


659) In eukaryotic cell, thylakoids, if present,


660) Difference between rough and smooth endoplasmic reticulum is that


661) Condensation product of adenine, ribose and phosphoric acid is named as


662) The enzyme used to join the DNA fragments is


663) Export firm of the body is


664) Which of the following pairs is mismatched?


665) Chlorophyll in chloroplasts is located in


666) Ultimate unit of DNA is


667) Which sugar is present in nucleic acid?


668) DNA is denatured by


669) In prokaryotic cells, which enzyme erases primer and fill gaps in DNA


670) The crystals of calcium carbonate deposit in the cell is called


671) Cell membrane controls


672) Adenosine monophosphate is a


673) Smooth endoplasmic reticulum acts as a major site for the synthesis of


674) The nucleus is separated from surrounding cytoplasm by nuclear membrane, which is


675) The Okazaki fragments in DNA chain growth


676) Highest number of enzymes is found in


677) In eukaryotes, the cell wall constitutes


678) Structural element of chromatin is


679) Enzyme catalase is seen in


680) Vacuoles are separated from cytoplasm by a membrane called


681) Complete the given NCERT statements (I-III) by choosing appropriate options for the blanks (A-D)
I. Cells that have membrane bound nuclei are called …A…
II. In both …B… and …C… cells, cytoplasm is the main arena of cellular activities
III. Cell that lack a membrane bound nucleus are called …D…


682) Which one of the following pairs of nitrogenous bases on nucleic acids, is wrongly matched with the
category mentioned against it?


683) Which one of the following is correctly matched?


684) A nucleoside is


685) The membrane potential of cell favours the


686) The prokaryotic cell does not contain


687) Histones are rich in


688) Choose the incorrect option


689) Purines posses nitrogen at


690) Number of carbons in ring of deoxyribose sugar is


691) Single membrane bound organelles are


692) Which one of the following statements is incorrect about the properties of DNA?


693) The term mitochondria was given by


694) Cristae are associated with which of the following?


695) Fat storing granules are


696) The Golgi apparatus


697) Acrosome is formed by


698) Select the wrong statement from the following


699) Golgi apparatus is absent in


700) Organisation of a cell has not been achieved in


701) Cellular totipotency was first demonstrated by


702) Out of the given cell organelles, which does not possess DNA?


703) ‘Plasma gel’ is the name of


704) Which of the following feature is common to prokaryotes and many eukaryotes?


705) Which one of the following organisms is not an example of eukaryotic cells?


706) Find the correct combination, that can form a nucleotide of RNA.


707) DNA consists of two complementary nucleotide chains. If the sequence of nucleotides in one of the chains
is AGCTTCGA then the complementary sequence of the other chain will be


708) In a hair pin model of RNA, which nitrogen base is present at the short end?


709) The thickness of unit membrane is


710) The plasma membrane consists mainly of


711) Phosphorus is present in


712) Which chapter of the book Micrographia, written by Robert Hooke gave birth to cell biology?


713) Material of the nucleus is stained by


714) When DNA replication starts


715) Cell adhesion and cell recognition occur due to biochemicals of cell membrane named


716) Width of the DNA molecule is


717) Which form of RNA has a structure resembling clover leaf?


718) Which one of the following is not a constituent of cell membrane?


719) Vacuole in a plant cell


720) Which one of the following also acts as a catalyst in bacterial cells?


721) The number of hydrogen bonds between adenine and thymine in a DNA molecule is


722) Chemical constituent of cystolith in plants is


723) Enzyme found functional in lysosome is


724) Primary wall of eukaryotic cell is …A… layered but secondary wall is …B… layered
Here, A and B refer to


725) In vitro synthesis of RNA and DNA was carried out first by


726) In animal cell, reserve food is usually


727) The type of ribosomes found in prokaryotes is


728) In a DNA molecule, the adenine is 15%. What will be the percentage of guanine in this DNA?


729) Which of the following is not a characteristic of prokaryotic cells?


730) Semi conservative replication of DNA was first demonstrated in


731) Consider the following statements and choose the correct options
I. The endomembrane system, include plasma membrane, ER Golgi complex, lysosomes and vacuoles.
II. ER helps in the transport of substamces, synthesis of proteins, lipoproteins and
glycogen.
III. Ribosomes are involved in protein synthesis.
IV. Mitochondria help in oxidative phosphorylation and generation of ATP.


732) Lysosomes are reservoirs (store house) of


733) The nucleolus is the site of formation of


734) Which of the following four cell structures is correctly matched with the accompanying description?


735) In eukaryotic cells, genetic material or DNA is organised into


736) In a DNA, percentage of thymine is 20%. What is the percentage of guanine?


737) Which of the following constitutes about 10-20 of total cellular RNA?


738) Kappa particles are


739) In prokaryotes, the process of replication is catalysed by the following enzymes. Identify which of the
enzymes is best coordinate with role


740) A nucleosome is a portion of the chromonema containing


741) Plant and animal cells, both have


742) DNA sequence that code for protein are known as


743) In eubacteria, a celluler component that resembles eukaryotic cells is


744) Pits are formed on the cell wall is due to lack of


745) The four basic shapes of bacteria are


746) Which of the following elements is very essential for uptake and utilisation of Ca2+ and membrane
function?


747) The lipid molecules present in plasma membrane have polar heads and non-polar tails (as shown in
figure). Which option represents the correct arrangement of lipids in lipid bilayer?


748) Which is the initial step in mRNA maturation process?


749) Cell organelle responsible for autolysis is


750) Identify the palindromic sequence in the following


751) The largest subunit of prokaryotic ribosomes is


752) In RNA, which is absent?


753) Most of the bacterial cell envelope consists of


754) DNA acts as a template for synthesis of


755) Which one of the following has its own DNA?


756) What is a genophore?


757) Select the double membrane bound cell organelles


758) Fluid mosaic model was given by


759) The main arena of various types of activities of a cell is


760) In plants, vacuole contains


761) The process of removal of introns and joining of exons in called


762) 'Omnis xellula-e-cellula' (all cells arises from pre-existing cells). This concept was given by


763) Difference between prokaryote and eukaryote is in


764) Unicellular microscopic organism were first studied by


765) Which of the following is characteristic of phospholipids of plasma membrane?


766) Cell membrane is made up of


767) The double helix model of Watson and Crick is known as


768) Which of the following statement is incorrect about plasmids?


769) Golgi body arises from


770) Telomerase is an enzyme, which is a


771) In Neisseria gonnorrhoeae , fimbriae takes part in …A…, while in Escherichia coli it helps in …B…
Choose appropriate options for A and B to complete the given statement


772) Which is the common point of similarity between DNA and RNA?


773) In prokaryotic cell, flagella, if present are
I. single-stranded
II. double-stranded
III. without differentiation of axoneme and sheath
IV. with differentiation of axoneme and sheath
Choose the correct option


774) Meselson and Stahl experiment on semi-conservative replication demonstrates


775) Which of the following is the site of lipid synthesis?


776) During endocytosis, the cell


777) DNA repairing is done by


778) Which of the following statements are correct about prokaryotic cells?
I. DNA lies freely in the cytoplasm, not associated with any organelle
II. The amount of DNA do not change as there are no haploid and diploid stages
III. Transcription and translation occurs in the cytoplasm
IV. Protein synthesis occurs only in the cytoplasm
Correct option regarding the above statement is


779) The main function of lysosome is


780) Which of the following cell(s) is/are exceptions to the cell theory?


781) Naked DNA without histones is found in


782) Which is properly paired?


783) Which of the following statement is correct about the cell wall of prokaryotic cell?
I. Cell wall, if present, possesses muramic acid
II. Cell wall, if presents, possesses acitic acid
III. Cell wall is always absent
The correct options is


784) Mechanical support, enzyme circulation, protein synthesis and detoxification of drugs are the functions of


785) An organelle with an internal cross section showing characteristic 9 +2 morphology is the


786) The RNA primer is used in


787) Genes present in the cytoplasm of eukaryotic cells are found in


788) Which of the following pairs lack the unit membrane?


789) Which of the following statements are correct?
I. Mycoplasmas are the smallest cells
II. Nerve cells are some of the longest cells
III. Ribosomes are non-membrane bound organelles found only in eukaryotic cells
IV. The cytoplasm is the main arena of cellular activities only in plant cells


790) Schwann proposed a cell theory according to which


791) The length of DNA having 23 base pairs is


792) Which of the following subunits of ribosome is composed of 23 S rRNA and a 5 S mRNA + 32 different
proteins?


793) Which of the following statements are correct?
I. A multicellular organism is composed of mainly three types of cells
II. Undifferentiated cells are stem cells and are unspecialised cells, which usually possesses the power of
division
III. Differentiated cells are post-mitotic cells and are specialised to perform specific functions
IV. Dedifferentiated cells are differentiated cells which revert to undifferentiated state to take over the
function of division


794) Ribosomes may also be called


795) The scientist who was awarded Nobel-Prize in 1959 for in vitro synthesis of polyribonucleotide?


796) Which of the following statements regarding mitochondrial membrane is not correct?


797) In a prokaryotic cell, the ratio of A + T/G + C is


798) Mitochondria are semi-autonomous as they possess


799) Many cells function properly and divide mitotically even though they do not have


800) In a DNA segment having six coils, there are 22 nitrogen base pair linked by two hydrogen bonds. How
many cytosine bases are found in that segment?


801) The chromosome in which centromere lies slightly away from the middle of the chromosome resulting in
one shorter arm and one longer arm, is called


802) A cell organelle that is exceptionally rich in hydrolytic enzymes is


803) Term basal body is associated with the development of


804) Sequence of DNA (non- coding) is known as


805) Tonoplast is a membrane, which surrounds


806) Lipid molecules in plasma membrane are arranged in which manner?


807) Which of the following statement was not explained in the cell theory given jointly by Schleiden and
Schwann?


808) For the study of structure of nucleus, the best cell is


809) Cell organelle without a membrane is


810) Nobody can have life if its constituent parts are not formed of cells. It was observed by


811) If the cell wall of a cell is removed, the remaining is called


812) The statement omnis cellula e cellula of Rudolf Virchow has been taken from his book


813) The transport of metabolities across the biomembrane occurs through


814) The number of base pairs per helical turn in Z-DNA is


815) Important site for formation of glycoproteins and glycolipids is


816) Which of the following represents prokaryotic cells?


817) Movement of cytoplasm around the vacuole in the cell is called as


818) Which of the following statement is not correct for prokaryotic cell?


819) DNA can be formed by


820) Select the correct fundamental features of cell theory
I. All cells are basically alike in their chemistry and physiology
II. All living organisms are composed of cells and their products
III. Each cell is made of a small mass of protoplasm containing a nucleus inside and a plasma membrane
with or without a cell wall outside
IV. Activities of an organism are the sum total of activities and interaction of its constituent cells
Correct option regarding the statement is


821) Prokaryotic ribosome has sedimentation coefficient of


822) The plasmid DNA confers certain unique characters to bacteria in which they are found. This include
I. resistance to antibiotics
II. no resistance to antibiotics
III. monitor bacterial transformation with foreign DNA
The correct option is


823) The cell as a basic unit of structure of living things was discovered by


824) What is the common between chloroplasts, chromoplasts and leucoplasts?


825) Wall of eukaryotic cell (fungus) is made up of a polymer of


826) Suicidal bags are


827) An analysis of a DNA (double strandard) sample yielded 18% cytosine. What would be the percentage of
other bases in this sample?


828) Which of the following is not a function of vacuole in plant cell?


829) Inner membrane of mitochondria forms


830) Plasma membrane is made up of


831) Many bacteria have small circular DNA outside the genomic DNA. These smaller DNA are called


832) The diameter of Z-DNA is


833) Glyoxylate cycle occurs in


834) A conspicuous rounded body present in nucleoplasm and attached to a particular chromosome at a
definite place is


835) During replication of a bacterial chromosome, DNA synthesis starts from a replication origin site and


836) Nucleotide consists of


837) The ‘Power house’ of cell is


838) Bacterial flagellum consists of all of the following components except


839) Middle lamella is mainly composed of


840) RNA is not found in


841) Two animal cells are interconnected by


842) One of the nucleotides of DNA is


843) Golgi apparatus
I. transports and modifies material.
II. Secrete mucin in respiratory tract.
III. Secretes slime in insectivorous plants
What is correct?


844) If an isolated strain of DNA is kept at 80-90°C, then


845) Which one of the following structures between two adjacent cells is an effective transport pathway?


846) Coupling factor ‘F’ is found in


847) Which of the following enzymes helps in crossing plasma membrane?


848) Which one is referred to as soluble RNA?


849) Which of the following is not true for a eukaryotic cell?


850) Secondary cell wall grows by


851) Fat is stored in the plant cell in


852) If a DNA sequence is same as that of a mRNA copy that is translated into protein, it is called


853) Read the following statements and select correct options for prokaryotic cells
I. They are generally smaller than eukaryotic cells
II. They multiply more rapidly than the eukaryotic cells
III. They are presented by bacteria, BGA mycoplasma and PPLO (Pleura Pneumonia Like Organism)


854) Which of the following are properties of reserved cells?


855) The thylakoid in chloroplast are arranged as


856) Consider the following statements and choose the correct options
I. The endomembrane system includes plasma membrane, ER, Golgi complex, lysosomes and vacuoles
II. ER helps in the transport of substances, synthesis of proteins, lipoproteins and glycogen
III. Ribosomes are involved in protein synthesis
IV. Mitochondria helps in oxidative phosphorylation and generation of ATP


857) Membrane that covers the vacuole in a plant cell is called


858) Read the given statements and select the correct option
I. In Golgi complex, the cisternae have cis face and trans face
II. The cis face and trans face of Golgi complex are called forming face and maturing face respectively


859) How many binding sites does ribosome have for tRNA molecules?


860) Which of the following is structural subunit of DNA?


861) Most prokaryotic cells, mainly the bacterial cells, have


862) Which one of the following organelles is not surrounded by any membrane?


863) Read the statements given below with regard to the functions performed by Golgi apparatus?
I. Transport and chemically modify the materials contained within it
II. Secrete mucin in the respiratory tract.
III. Secrete slime in the insectivorous plants.
Which of the following is the correct answer?


864) Which of the following differentiate plant cells from animal cells?


865) The types of ribosome found in prokaryote is


866) The maximum amount of calcium pectate is present in


867) Subunits of 80 S ribosome are


868) ‘It has not escaped our notice that the specific pairing we have postulated immediately suggests a possible
copying mechanism for the genetic material’. This is written by


869) Clover leaf secondary structure of tRNA has anticodon arm which


870) Which of the following statements are correct for eukaryotic cells?
I. Two envelope organisation
II. The flagella if present, are 11 stranded with differentiation of axonema and sheath
III. Organised nucleus
IV. Cell wall without muramic acid
Choose the correct option


871) A nucleoid represents the genetic material of prokaryotes. It is known as


872) Nucleic acid occurs in


873) Assembly of two subunits 40 S and 60 S of the ribosome is


874) DNA replication includes


875) Mesosomes are the infoldings of cells membrane, which
I. helps in cell wall formation, DNA replication and respiration
II. increases the surface area of plasma membrane
III. are present in both prokaryotic and eukaryotic cells
Choose the correct option


876) The cell organelle associated with intracellular digestion of macromolecules is


877) According to cell doctrine, which of the following statements are incorrect?
I. The bodies of all living beings are made up of cells and their products
II. Cells are the basic units of structure in the body of living organisms
III. Cells are the basic units of function in living organisms that is, the activities of an organisms are the
sum total of the activities of its cells
IV. Genetic information is stored and expressed inside the cells
Choose the correct option


878) Long flattened, usually unbranched units arranged in parallel stacks in endoplasmic reticulum are called


879) Ribosomes are considered as the most primitive cell organelles.
Ribosomes occur in all eukaryotic organisms.


880) Smaller cells are usually metabolically active cells
Smaller cell have higher nucleocytoplasmic ratio and higher surface volume ratio


881) Prokaryotes have an one envelope system
There is not even a single membrane that surrounds the prokaryotic cell


882) The number of mitochondria in a cell do not correspond to the function of the cell.
Mitochondria are common to both plant and animal cells.


883) A cell membrane shows fluid behaviour.
A membrane is a mosaic or composite of diverse lipids and proteins


884) A cell is a closed compartment
Plasma membrane of a cell is selectively permeable


885) Cell is an open system
Cell receives a number of materials including energy containing nutrients from outside


886) Eukaryotic cells have the ability to adopt a variety of shapes and carry out directed
movements.
There are three principle types of protein filaments-actin filament, microtubules and
intermediate filaments, which constitute the cytoskeleton.


887) Every cell behaves as a compartment
Cells are partially covered over by a membrane


888) Mitochondria and chloroplast are semi-autonomous organelles.
They are formed by division of pre-existing organelles as well as contain DNA but lack
protein synthesising machinery.