Practice Test

Q1) Cellular pool is made up of Show Answer

Q2) Carbohydrates, proteins and lipids form Show Answer

Q3) The term 'metabolism' indicates a variety of reactions carried out at Show Answer

Q4) Biosynthesis of cellular material is Show Answer

Q5) Which of the following is not true ? Show Answer

Q6) Micro molecules do not include Show Answer

Q7) Nucleic acids are Show Answer

Q8) Chlorophyll containing cells produce ________ in presence of light. Show Answer

Q9) Which of the following is not a component of carbohydrates ? Show Answer

Q10) The proportion of oxygen and hydrogen in carbohydrate is Show Answer

Q11) The general formula for complex carbohydrates is Show Answer

Q12) HCHO is a/an Show Answer

Q13) Rhamnose is Show Answer

Q14) Cellulose is Show Answer

Q15) Which of the following is a characteristic of carbohydrates ? Show Answer

Q16) Fructose is Show Answer

Q17) Carbohydrates are classified on the basis of Show Answer

Q18) Which of the following form the basic units of carbohydrates ? Show Answer

Q19) Which of these cannot be hydrolysed further ? Show Answer

Q20) Monosaccharides are the basic units of Show Answer

Q21) Monosaccharides are further classified based on the Show Answer

Q22) The sugar which acts as a respiratory substrate in plants as well as in animals is Show Answer

Q23) Which of the following is correct statement ? Show Answer

Q24) Ribulose is Show Answer

Q25) Xylose is Show Answer

Q26) Glyceradehyde is a Show Answer

Q27) Ribose and deoxyribose are Show Answer

Q28) Erythrose is ________ sugar. Show Answer

Q29) The simplest monosaccharide made up of three carbon atoms amongst the following is Show Answer

Q30) Disaccharide is made up of Show Answer

Q31) Disaccharides are formed by a _________ bond between two monosaccharides. Show Answer

Q32) Disaccharides are formed by monosaccharide units by the Show Answer

Q33) Glucose and fructose condense to form Show Answer

Q34) Lactose sugar found in milk is a Show Answer

Q35) Cane sugar of table is Show Answer

Q36) The sugar found in mammalian milk is Show Answer

Q37) Formation of polysaccharides from large number of monosaccharides is Show Answer

Q38) Polysaccharides are Show Answer

Q39) Cellulose and starch are Show Answer

Q40) General formula of polysaccharides is Show Answer

Q41) The 'n' present in general formula of polysaccharides represents the Show Answer

Q42) Which one of the following is a heteropolysaccharide ? Show Answer

Q43) The sugar found as reserve food in grapes is Show Answer

Q44) The sugar found in the medullary sheath of nerve fibers is Show Answer

Q45) The sugar found in nectar and honey is Show Answer

Q46) Which of the following statement is true ? Show Answer

Q47) Glycans are Show Answer

Q48) _________ is animal starch Show Answer

Q49) A homopolysaccharide containing polymer of galactose and used as a base for culture media. Show Answer

Q50) Which among the following is a heteropolysaccharide ? Show Answer

Q51) Fungal cellulose also found in the exoskeleton of crabs, prawns etc is Show Answer

Q52) Cell wall of bacteria and cyanobacteria is formed of Show Answer

Q53) A heteropolysaccharide anti-coagulant found in blood is Show Answer

Q54) Proteins are the long chain polymers of Show Answer

Q55) The term 'Protein' is derived from the Greek word 'Proteious' which means Show Answer

Q56) The term 'Protein' was coined by Show Answer

Q57) Proteins Show Answer

Q58) The molecular weight of haemoglobin is Show Answer

Q59) The difference among species is due to the difference in its ________ components. Show Answer

Q60) The number of proteins in a bacterial cell is over Show Answer

Q61) The number of proteins in human cells is over Show Answer

Q62) Proteins do not have Show Answer

Q63) The total number of amino acids is Show Answer

Q64) The total number of essential amino acids which can not be synthesized by organisams within their body is Show Answer

Q65) A peptide bond is formed between _______ and _________ of two amino acids respectively. Show Answer

Q66) Amino acids are amphoteric in nature. This means that Show Answer

Q67) The bond between two amino acid molecules in proteins is Show Answer

Q68) Peptide bond is formed by ________ of water molecules between two amino acids. Show Answer

Q69) In a polypeptide chain, the end containing free amino group is Show Answer

Q70) During elongation of polypeptide chain, an new amino acid can be added at Show Answer

Q71) The polypeptide chains are folded using Show Answer

Q72) Proteins having only amino acids or their derivatives are Show Answer

Q73) Proteins having only amino acids with non-protein prosthetic group are Show Answer

Q74) Find the FALSE statement. Show Answer

Q75) The protein present in hair and skin is Show Answer

Q76) The protein present in muscles is Show Answer

Q77) The protein present in the cell membrane of animals is Show Answer

Q78) Muscles contract with help of Show Answer

Q79) Coagulation or clotting of blood occurs due to Show Answer

Q80) The protein in blood which gives resistance to diseases is Show Answer

Q81) A simple protein zein is found in Show Answer

Q82) Histone proteins are Show Answer

Q83) Histone proteins are associated with Show Answer

Q84) Egg yolk contains _______ in large quantities. Show Answer

Q85) The term 'Lipid' was coined by Show Answer

Q86) Lipids are Show Answer

Q87) which of the following is TRUE about lipids ? Show Answer

Q88) Waxes are produced by Show Answer

Q89) Lipids contain Show Answer

Q90) Chemically lipids are Show Answer

Q91) The proportion of hydrogen : Oxygen in lipids is Show Answer

Q92) Lipids contain Show Answer

Q93) Lipids contain Show Answer

Q94) Which of the following is not type of lipid ? Show Answer

Q95) Fatty acids has a Show Answer

Q96) Triglycerides contain Show Answer

Q97) Triglycerides are Show Answer

Q98) Simple lipids are further classified on the basis of number of Show Answer

Q99) The saturated fatty acids have Show Answer

Q100) The unsaturated fatty acids have Show Answer

Q101) Find the FALSE statement about unsaturated fats Show Answer

Q102) Find the True statement about saturated fats. Show Answer

Q103) Compound lipid contain Show Answer

Q104) Lipids present in the cell membrane are Show Answer

Q105) Which of the following is a hydrolytic product of lipids ? Show Answer

Q106) Each molecule of a steroid has carbon atoms arranged in ________ interlocking rings. Show Answer

Q107) Which of the following is a derived lipid with four interlocking rings ? Show Answer

Q108) The steroid component present in bile salt is Show Answer

Q109) Carotenoids contain Show Answer

Q110) Carotenoids are Show Answer

Q111) Carotenoids mainly help in the process of Show Answer

Q112) Carotenoids are present in Show Answer

Q113) Carotenoids are found in Show Answer

Q114) Fredrick Meischer Show Answer

Q115) The term 'nucleic acid' was coined by Show Answer

Q116) Fredrick Meischer coined the term Show Answer

Q117) Meischer discovered nucleic acids from Show Answer

Q118) Genetic material in viruses is Show Answer

Q119) Nucleic acids occur in Show Answer

Q120) In the cells, nucleic acids occur in Show Answer

Q121) Nucleic acids are Show Answer

Q122) Purines are Show Answer

Q123) Pyrimidines are Show Answer

Q124) Nitrogen bases in DNA are Show Answer

Q125) The nitrogenous bases are linked to sugar by Show Answer

Q126) DNA is acidic in nature due to Show Answer

Q127) DNA differs from RNA in Show Answer

Q128) Chemically RNA differs from DNA in having Show Answer

Q129) The similarity between DNA and RNA is that, they have Show Answer

Q130) Sugar and nitrogen base linked by glycosidic bond is known as Show Answer

Q131) Phosphoric esters of nucleosides are known as Show Answer

Q132) A complex formed by de-oxyribose sugar, phosphate and nitrogen base is Show Answer

Q133) A nucleotide treated with enzyme phosphate will yield Show Answer

Q134) A nitrogen base with a double ring can be attached to a pentose sugar in Show Answer

Q135) Which of the following exist in pairs in DNA ? Show Answer

Q136) Phosphodiester linkage is present between Show Answer

Q137) Which of the following are complementary nitrogen bases ? Show Answer

Q138) The complementary nitrogen bases in DNA are joined by Show Answer

Q139) Purine and Pyrimidine ratio is Show Answer

Q140) X-ray diffraction studies of DNA was performed by Show Answer

Q141) Who had proposed the double helix structure of DNA ? Show Answer

Q142) According to Watson and Crick, DNA Show Answer

Q143) The two strands of DNA are Show Answer

Q144) In a DNA molecule, which of the following statement is not true ? Show Answer

Q145) In eukaryotic cell, DNA is found in Show Answer

Q146) DNA contains all the information needed for Show Answer

Q147) Which of the following is a FALSE statement about DNA ? Show Answer

Q148) DNA and RNA are similar as they both Show Answer

Q149) Which of the following is not found in RNA ? Show Answer

Q150) Which of the following contains uridylic acid ? Show Answer

Q151) In RNA, Show Answer

Q152) Which of the following is soluble RNA ? Show Answer

Q153) m-RNA forms about _________ of the total cell RNA. Show Answer

Q154) A = U is present in Show Answer

Q155) Maximum amount of RNA is present in Show Answer

Q156) The term 'enzyme' was coined by Show Answer

Q157) The word 'enzyme' means Show Answer

Q158) The first person to isolated urease in pure crystalline form was Show Answer

Q159) Urease was isolated in a crystalline form from Show Answer

Q160) The enzymes which are produced and act at the same site are Show Answer

Q161) The enzymes which are produced at one side but act far away are Show Answer

Q162) Enzymes Show Answer

Q163) What is not TRUE about enzymes ? Show Answer

Q164) Chemically most of the enzymes are Show Answer

Q165) Enzymes can react with Show Answer

Q166) Enzymes have Show Answer

Q167) A single enzymes can act on Show Answer

Q168) The molecule of an enzyme is ________ the molecule of substrate. Show Answer

Q169) The specific part of enzyme molecule which comes in contract with the substrate molecule is Show Answer

Q170) The enzyme invertase acts on Show Answer

Q171) The enzyme urease acts on Show Answer

Q172) Enzymes are Show Answer

Q173) The gel like nature of enzymes provide a Show Answer

Q174) In enzymes, the size of dispersion medium is _______ the size of dispersion particles. Show Answer

Q175) Enzyme optima includes Show Answer

Q176) Which of the following effect does temperature have on enzyme activity ? Show Answer

Q177) If an enzyme is frozen and kept below its freezing point, it is Show Answer

Q178) __________ increase in temperature increases enzyme activity. Show Answer

Q179) Most of the intracellular enzymes are active at Show Answer

Q180) In which of these conditions enzymes do not get denatured ? Show Answer

Q181) Enzymes are denatured when the ________ bonds are broken. Show Answer

Q182) Normally enzymes are proteins. The non protein enzyme is Show Answer

Q183) The substance which acts as a competitive inhibitor of enzymes Show Answer

Q184) The competitive inhibition of enzymes Show Answer

Q185) The substance which acts as a non-competitive inhibitor of enzymes Show Answer

Q186) The non-competitive inhibition of enzymes Show Answer

Q187) In cyanide poisoning, the inhibitor Show Answer

Q188) Cellular pool is Show Answer

Q189) Which of the following about monosaccharides is UNTRUE ? Show Answer

Q190) Trioses, tetroses and pentose are Show Answer

Q191) Maltose is Show Answer

Q192) The carbohydrate forming 90% of cotton fibers, 20-25% wood and paper from paper pulp is Show Answer

Q193) Which of the following statement about protein is UNTRUE ? Show Answer

Q194) The simplest amino acid is Show Answer

Q195) Phenylalanine, tyrosine, proline are Show Answer

Q196) Which of the following is statement INCORRECT ? Show Answer

Q197) Find the CORRECT statement. Show Answer

Q198) The FALSE statement about lipids is Show Answer

Q199) Find the ODD one out. Show Answer

Q200) As compared to DNA pentose sugar, the RNA pentose sugar has Show Answer

Q201) Find the ODD one out from the following based on its chemical structure. Show Answer

Q202) Find the ODD one out with reference to DNA. Show Answer

Q203) The phosphate group in nucleic acids is provided by Show Answer

Q204) Which of the following is found both in DNA and RNA? Show Answer

Q205) Which one of the following is a nucleotide ? Show Answer

Q206) Successive nucleotides of the same strand of DNA are joined by Show Answer

Q207) Which of the following is TRUE ? Show Answer

Q208) The number of adenine molecules in a given DNA segment is 25 and the number of cytosine molecules is 45. The total number of nucleotides in the segment is Show Answer

Q209) In a DNA molecule, if the percentage of thymine is 22%, then guanine will be Show Answer

Q210) Which staement is not TRUE about enzymes ? Show Answer

Q211) Biologocally usable form of energy is called Show Answer

Q212) ATP is called biologically usable form of energy because Show Answer

Q213) Hydrolysis of ATP converts it into Show Answer

Q214) Energy is released due to the Show Answer

Q215) The energy currency of a cell is Show Answer

Q216) The 1992 Noble Prize for the medicine was awarded to Edmond Fischer and Edwin Krebs for their work on: Show Answer

Q217) Blood glucose level is not dependent upon muscle glycogen because of absence of: Show Answer

Q218) In a DNA molecule, the sugars: Show Answer

Q219) Select the specific base pairs of DNA: Show Answer

Q220) Which is correct sequence according to increasing molecular weight? Show Answer

Q221) The hydrogen bonds between adenine and guanine are: Show Answer

Q222) Which one of the following bases is found only in the RNA and not in DNA? Show Answer

Q223) Nucleic acids are polymers of: Show Answer

Q224) Two strands of DNA are attached by hydrogen bonds between: Show Answer

Q225) In DNA sugar and phosphate form backbone of the molecule. The adjacent sugars are joined to each other by: Show Answer

Q226) The nitrogenous organic base purine occuring in RNA is: Show Answer

Q227) One of the similarities between DNA and RNA is that both: Show Answer

Q228) Which one of the following hydrolyses internal phosphodiester bonds in a polynucleotide chain? Show Answer

Q229) The nuclease enzymes which begins its attack from a free end of a polynucleotide: Show Answer

Q230) Exonucleases cleaving nucleotides one at a time from the end of the polynucleotide chain are: Show Answer

Q231) Phosphorus is present in: Show Answer

Q232) In sea urchin DNA, which is double stranded, 17% of the bases were shown to be cytosine. The percentages of the other three bases expected to be present in this DNA are Show Answer

Q233) Find the number of phosphodiester bonds and glycosidic linkages associated with E. coli DNA respectively Show Answer

Q234) In which one of the following enzymes,
is copper necessarily associated as an
activator? Show Answer

Q235) Which one of the following statements
regarding enzyme inhibition is correct? Show Answer

Q236) The catalytic efficiency of two different
enzymes can be compared by the Show Answer

Q237) Carbohydrates, the most abundant
biomolecule on earth, are produced by Show Answer

Q238) Nucleotides are building blocks of nucleic
acids. Each nucleotide is a composite
molecule formed by Show Answer

Q239) Which of the following is the simplest
amino acid? Show Answer

Q240) Enzymes, vitamins and hormones
can be classified into a single category of
biological chemicals, because all of these Show Answer

Q241) An organic substance bound to an enzyme
and essential for its activity is called Show Answer

Q242) 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 Show Answer

Q243) Three of the following statements about enzymes are correct and one is wrong.
Which one is wrong? Show Answer

Q244) Which one is the most abundant protein in
the animal world? Show Answer

Q245) In double helix of DNA, the two DNA
strands are Show Answer

Q246) RNA does not possess Show Answer

Q247) Which is not consistent with double helical
structure of DNA? Show Answer

Q248) A nucleotide is formed of Show Answer

Q249) In RNA, thymine is replaced by Show Answer

Q250) The unit of nucleic acid is Show Answer

Q251) A segment of DNA has 120 adenine and
120 cytosine bases. The total number of
nucleotides present in the segment is Show Answer

Q252) DNA is composed of repeating units of Show Answer

Q253) Adenine is a Show Answer

Q254) Amino acids are produced from Show Answer

Q255) Amino acids are mostly synthesised from Show Answer

Q256) Glycogen is a polymer of Show Answer

Q257) Which is wrong about nucleic acids? Show Answer

Q258) Which of the following nucleotide sequences
contains 4 pyrimidine bases? Show Answer

Q259) Which purine base is found in RNA? Show Answer

Q260) What are the most diverse molecules in the
cell? Show Answer

Q261) In which of the following groups are all
polysaccharides? Show Answer

Q262) Lactose is composed of Show Answer

Q263) Which of the following have carbohydrate
as prosthetic group? Show Answer

Q264) ATP is Show Answer

Q265) In DNA, when AGCT occurs, their
association is as per which of the following
pair? Show Answer

Q266) Similarity in DNA and RNA is that Show Answer

Q267) Length of one loop of B-DNA is Show Answer

Q268) In a DNA percentage of thymine is 20% then
what will be percentage of guanine? Show Answer

Q269) The following ratio is generally constant for
a given species Show Answer

Q270) Which of the following is not an essential
amino acid ? Show Answer

Q271) Which of the following is a polysaccharide? Show Answer

Q272) The most abundant minerals of a living cell
are Show Answer

Q273) Enzymes having slightly different molecular
structure but performing identical activity
are Show Answer

Q274) Which is a typical example of ‘feedback
inhibition’? Show Answer

Q275) Co-factor (prosthetic group) is a part of
holoenzyme. It is Show Answer

Q276) Which is non-reducing sugar ? Show Answer

Q277) Sucrose, a common table sugar, is composed
of Show Answer

Q278) The protein present in wheat grain is Show Answer

Q279) Enzymes are Show Answer

Q280) Sucrose is an example of Show Answer

Q281) What is the structure of glucose? Show Answer

Q282) Protein denaturatjon takes place by the
activity of Show Answer

Q283) Cholesterol is a Show Answer

Q284) Most common monomer of carbohydrate is Show Answer

Q285) The sugar in DNA is Show Answer

Q286) In which of the following linear polymeric
biomolecule, the two ends are described as
reducing and non-reducing ends ? Show Answer

Q287) At its isoelectric point a protein has Show Answer

Q288) Which of the following statements regarding
coenzymes and prosthetic groups of enzymes
is not true? Show Answer

Q289) If the length of a double helical DNA is
1.7 meters. The number of base pairs present
in the DNA is Show Answer

Q290) DNA contains naeleobases, sugar and
phosphate. Removal of wlffish among these
from a DNA sample will ‘not significantly
length of the DNA ? Show Answer

Q291) With reference to enzymes, which of “the
following is true? Show Answer

Q292) The tightly bound non proteinaceous organic
compound is Show Answer

Q293) Example of a typical homopolysaccharide is Show Answer

Q294) Inulin is a polymer of Show Answer

Q295) Mannitol is Show Answer

Q296) Which one is an imino acid ? Show Answer

Q297) In a polysaccharide, the individual
monosaccharides are linked by a Show Answer

Q298) Select the incorrect statement. Show Answer

Q299) With reference to enzymes, turnover number
means Show Answer

Q300) Essential: non-essential amino acid is Show Answer

Q301) Find out the wrongly matched pair. Show Answer

Q302) Which of the following is not a conjugated
protein ? Show Answer

Q303) The energy content in Kcal/g of carbohydrate
: protein : triglycerol respectively is
approximately in the ratio of Show Answer

Q304) Formation of both peptide and glycosidic
bonds involve Show Answer

Q305) Purines possess nitrogen at Show Answer

Q306) Which one is diaminodicarboxylic amino
acid ? Show Answer

Q307) Example of water soluble plant pigment is Show Answer

Q308) The chemical formula of starch is Show Answer

Q309) The two polynucleotide chains in DNA are Show Answer

Q310) The backbone of RNA consists of which of the following sugar? Show Answer

Q311) In a DNA molecule, distance between two based is Show Answer

Q312) Antiparallel strands of a DNA molecule means that Show Answer

Q313) Out of A-T, G-C pairing, bases of DNA may exist in alternate valency state owing to arrangements called Show Answer

Q314) In DNA of certain organisms, guanine constitutes 20% of the bases. What percentage of the bases would be
adenine? Show Answer

Q315) Diameter of DNA is constant due to Show Answer

Q316) In DNA, which of the following is absent? Show Answer

Q317) If a length of DNA has 45,000 base pairs, how many complete turns will the DNA molecule takes? Show Answer

Q318) The distance between two base pairs in DNA is Show Answer

Q319) Which of the following is not relevant to the structure of double helical DNA? Show Answer

Q320) RNA has uracil instead of Show Answer

Q321) What is the difference between RNA and DNA? Show Answer

Q322) 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? Show Answer

Q323) In DNA structure, Nobel Prize was given to Show Answer

Q324) In the DNA molecule Show Answer

Q325) 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? Show Answer

Q326) Which one of the following nitrogenous bases is seen only in RNA? Show Answer

Q327) Ribose sugar is present in Show Answer

Q328) Ultimate unit of DNA is Show Answer

Q329) Which sugar is present in nucleic acid? Show Answer

Q330) DNA is denatured by Show Answer

Q331) Number of carbons in ring of deoxyribose sugar is Show Answer

Q332) Which one of the following statements is incorrect about the properties of DNA? Show Answer

Q333) Find the correct combination, that can form a nucleotide of RNA. Show Answer

Q334) 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 Show Answer

Q335) In a hair pin model of RNA, which nitrogen base is present at the short end? Show Answer

Q336) Width of the DNA molecule is Show Answer

Q337) The number of hydrogen bonds between adenine and thymine in a DNA molecule is Show Answer

Q338) In a DNA molecule, the adenine is 15%. What will be the percentage of guanine in this DNA? Show Answer

Q339) In a DNA, percentage of thymine is 20%. What is the percentage of guanine? Show Answer

Q340) In RNA, which is absent? Show Answer

Q341) Which is the common point of similarity between DNA and RNA? Show Answer

Q342) The length of DNA having 23 base pairs is Show Answer

Q343) 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? Show Answer

Q344) An analysis of a DNA (double strandard) sample yielded 18% cytosine. What would be the percentage of
other bases in this sample? Show Answer

Q345) Nucleotide consists of Show Answer

Q346) One of the nucleotides of DNA is Show Answer

Q347) If an isolated strain of DNA is kept at 80-90°C, then Show Answer

Q348) Which of the following is structural subunit of DNA? Show Answer

Q349) Lipid are found in acid insoluble fraction during the analysis of chemical composition of tissues. Given the
reason Show Answer

Q350) Choose the element which is negligible in living matter Show Answer

Q351) Which statement regarding coenzyme is incorrect? Show Answer

Q352) The rate of the reaction doubles or decreases by half, for every… °C change in either direction Show Answer

Q353) Enzyme often have additional parts in their structures that are made up of molecules other than
proteins. When this additional chemical part is an organic molecule, it is called Show Answer

Q354) Which one is imino acid? Show Answer

Q355) The sum total composition of acid soluble and acid insoluble fraction pool represents the
Show Answer

Q356) The ‘lock’ and ‘key’ model of enzyme action illustrates that a particular enzyme molecule Show Answer

Q357) After doing the chemical analysis of organic compounds found in living organisms, two fractions were
observed namely
Show Answer

Q358) Which one is not an example for hydrolases?
Show Answer

Q359) Which type of protein is present in human skin? Show Answer

Q360) The metabolic flow is called Show Answer

Q361) The pyrimidine base, which confers additional stability to DNA over RNA, is Show Answer

Q362) If the total amount of adenine and thymine in a double-stranded DNA is 60%, then the amount of
guanine in this DNA will be Show Answer

Q363) An enzyme extract when subjected to electric field, separates into two fractions each catalyzing
the same reaction. These fractions are Show Answer

Q364) Amino acids the substituted methanes. Name the four substituent groups occupying the four valency positions Show Answer

Q365) The ‘lock’ and ‘key’ theory of enzyme structure and function was proposed by Show Answer

Q366) Pepsin is an ……enzyme Show Answer

Q367) Which one is a polymer? Show Answer

Q368) Which of the following statements are correct?
I. Acetic acid can form cholesterol
II. Flow of metabolites through metabolic pathway has a definite rate and direction. It is called dynamic
state of body constituents
III. Anabolic pathway is endergonic while catabolic pathway is exergonic
IV. All biomolecules have a term over, i. e., they are constantly being changed into some other
biomolecules and also made from other biomolecules
The correct options is Show Answer

Q369) Which is a reducing sugar? Show Answer

Q370) Formation of glycogen from glucose is called
Show Answer

Q371) Which of the following statements are correct for polysaccharides?
I. The polysaccharides are found as a part of the acid insoluble pellet
II. These are long chains of sugars
III. They are threads containing different monosaccharides as building blocks
IV. Cellulose is a polymeric polysaccharide consisting of only one type of monosaccharide i. e., fructose Show Answer

Q372) Select the false statement
I. Living process is a constant effort to promote falling into equilibrium
II. Energy can enter and leave a cell
III. Matter can enter and leave a cell
IV. Metabolic pathways are interlinked Show Answer

Q373) Arachidonic acid is Show Answer

Q374) Inulin is a polymer of Show Answer

Q375) Table sugar consists of Show Answer

Q376) For nucleic acids, the building block is a Show Answer

Q377) An example of feedback inhibition is Show Answer

Q378) The term metabolism means Show Answer

Q379) Chitin is a Show Answer

Q380) Richest energy compound is Show Answer

Q381) Select the wrong statement. Show Answer

Q382) Which of the following is an essential amino acids? Show Answer

Q383) The aggregation of the various kinds of biomolecules in a cell is referred to as the Show Answer

Q384) Secondary metabolites can be observed in Show Answer

Q385) Select the secondary metabolites from the list given below
I. alkaloids
II. flavonoids
III. rubber
IV. essential oils
V. antibiotics
VI. coloured pigments
VII. scents
VIII. gums
IX. spices
Choose the correct option Show Answer

Q386) What is the starting point in the production of food? Show Answer

Q387) Name the heterocyclic compounds which are known as nitrogenous bases
Choose the most appropriate options Show Answer

Q388) In which one of the following enzymes copper is necessarily associated as an activator? Show Answer

Q389) The regulation of the chemical composition of blood and body fluids and other aspects of its internal
environment by an organism to maintain the physiological process is called Show Answer

Q390) ‘G’ in DNA strand base pairs with ‘C’ by 3… bonds Show Answer

Q391) The inhibitor which inhibits the enzyme activity by binding to the active site of the enzyme, due to the
close resemblance to the substrate in its molecular structure is called Show Answer

Q392) Select the correct pair of substituted purines Show Answer

Q393) Which one of the following is wrongly matched? Show Answer

Q394) Enzymes that catalyze inter-conversion of optical, geometrical or positional isomers, are
Show Answer

Q395) All the carbon compounds obtained from living tissues are named as Show Answer

Q396) A fatty acid has a carboxyl group attached to R group. The R group could be a Show Answer

Q397) With reference to enzymes, which one of following statements is true? Show Answer

Q398) When a metabolic disequilibrium is in effect, then only cells continue to function
How do cells avoid reaching metabolic equilibrium? Show Answer

Q399) Which of the following radioisotope is not suitable for DNA labeling based studies? Show Answer

Q400) Jacob and Monod named some enzymes as allosteric, whose activity is regulated by Show Answer

Q401) Identify the term ‘ash’ in term of living tissue sample analysis from the statements given below Show Answer

Q402) Grinding of a living tissue in trichloroacetic acid shows the presence of the inorganic compounds like
sulphate, phosphate etc, which are categorised in Show Answer

Q403) Formation of lactic acid form glucose occurs in… metabolic steps Show Answer

Q404) A nucleotide has three chemically distinct compounds. These are A, B and C
Choose the correct option for A, B and C Show Answer

Q405) Answer briefly
I. Hydrolysis of glycogen to glucose is termed as?
II. Name the enzyme which takes part in the hydrolysis of glycogen
III. Amylum is an another name of
IV. Name the polysaccharide formed as the end product of the photosynthesis
Correct option with all the answers is Show Answer

Q406) Which of the following is not a conjugated protein? Show Answer

Q407) …….. is the most abundant protein in whole of the biosphere Show Answer

Q408) Which enzyme is useful as colour brightening agent in detergent industry? Show Answer

Q409) Locations or sites in the human DNA where single base DNA differences occur, are called Show Answer

Q410) An organic substance bound to an enzyme and essential for its activity, is called Show Answer

Q411) Choose the correct statements
I. Bond energy (ATP) is utilised for biosynthesis, osmotic and mechanical work that we perform
II. When glucose is degraded into lactic acid in our muscles, energy of liberated
III. Assembly of a proteins from amino acids requires energy
IV. Majority of metabolic reactions can occur in isolation
V. There are many examples of uncatalysed metabolic reactions Show Answer

Q412) Maltose consists of which one of the following?
Show Answer

Q413) Mannitol is Show Answer

Q414) Almost all enzymes are … in nature
Show Answer

Q415) One of the secondary structures exhibited by DNA is….. Show Answer

Q416) Feedback inhibition of enzymes is affected by which of the following? Show Answer

Q417) All the chemical reactions occurring in living organisms are called Show Answer

Q418) Given below are two statements A and B. Choose the correct answer related to the statements.
Statement A Amino acids are amphoteric in their function.
Statement B All amino acids are necessary for our body.
Show Answer

Q419) The tertiary structure of the proteins containing amino acid cysteine is achieved through
Show Answer

Q420) Maltose gives rise to two molecules of Show Answer

Q421) One of the following is a simple protein. Show Answer

Q422) Which of the following statements are correct?
I. Relative abundance of carbon and hydrogen with respect to other elements is higher in any living
organisms
II. Living organisms have more nitrogen and oxygen per unit mass than inanimate objects (e. g., earth
crust
III. All the elements present in a sample of earth’s crust are also present in a sample of living tissue
IV. Living organisms have more Ca, Mg,Na in them than inanimate object Show Answer

Q423) Which one is diaminodicarboxylic amino acid? Show Answer

Q424) Which of the following statements about enzymes are correct?
I. Enzymes do not alter the overall change in free energy for a reaction
II. Enzymes are highly specific for reactions
III. The energy input needed to start a chemical reaction is called activation energy
IV. Enzymes are proteins whose three dimensional shape is key to their functions Show Answer

Q425) Which amino acid is denoted by symbol ‘F’? Show Answer

Q426) Which enzyme catalyse the break down of hydrogen peroxide to water and oxygen? Show Answer

Q427) Sugar and amino acids are Show Answer

Q428) Which of the following statements regarding enzyme inhibition is correct?
Show Answer

Q429) Enzymes are functional at Show Answer

Q430) Cellulose is made up of Show Answer

Q431) Which of the following statements is wrong? Show Answer

Q432) Name the four elements called ‘Big-four’ which make up 95% of all elements found in a living system Show Answer

Q433) Proteins are heteropolymers which are madeup of …… type of monomers of amino acids Show Answer

Q434) Catabolic and anabolic pathways are often coupled in cell. Why? Show Answer

Q435) Molecular weight of protein is Show Answer

Q436) Name the disaccharide which is the major sugar of insect haemolymph Show Answer

Q437) One turn of DNA has nucleotide pairs Show Answer

Q438) Phospholipids are Show Answer

Q439) Why metabolic pathways are comparable to automobile traffic in a city? Show Answer

Q440) A bond formed between carboxyl group of one amino acid and amino group of adjacent amino
acid, is called
Show Answer

Q441) In animal tissues, the categories of compounds present are called
Show Answer

Q442) Cellulose is a polymer of Show Answer

Q443) Proteins with catalytic power are called Show Answer

Q444) The enzyme which converts corn starch into fructose rich corn syrup is Show Answer

Q445) The globular proteins undergo structural changes, in response to extremes of pH or temperature,
the process called Show Answer

Q446) Which of the following is a disaccharide? Show Answer

Q447) What are proenzymes? Show Answer

Q448) Which of the following is the simplest amino acid? Show Answer

Q449) Hydrolysis of a glycosidic bond in a disaccharide is an example of Show Answer

Q450) Which of the following is non-reducing sugar? Show Answer

Q451) Phospholipids are Show Answer

Q452) Richest source of protein is Show Answer

Q453) Which of the following polysaccharide is present as a store house of energy in plant tissues? Show Answer

Q454) Which form of keratin is present in human hair? Show Answer

Q455) The most abundant chemical in living organisms is Show Answer

Q456) Basic structure of proteins was given by Show Answer

Q457) Name the most abundant protein in animal world Show Answer

Q458) Which of the following is the example of structural protein? Show Answer

Q459) Which of the following statements are incorrect?
I. Left end of a polysaccharide is called non-reducing end while right end is called reducing end
II. Starch and glycogen are branched molecules
III. Starch and glycogen are the reserve food materials of plants and animals, respectively
IV. Starch can hold iodine molecules in its helical secondary structure but cellulose being non-helical,
cannot hold iodine Show Answer

Q460) Enzymes catalyses the biochemical reactions by …… the activation energy Show Answer

Q461) The acid soluble pool, roughly represents
Show Answer

Q462) Choose the type of enzyme involved in the following reaction
S − G + S′ → S + S′ − G Show Answer

Q463) Which of the following is an isozyme? Show Answer

Q464) Primary metabolites play known roles in Show Answer

Q465) Sucrose, a common table sugar is composed of Show Answer

Q466) Double sugar is Show Answer

Q467) Variety of amino acids are formed on the basis of Show Answer

Q468) Carbohydrates, the most abundant biomolecules earth, are produced by
Show Answer

Q469) The form of DNA with 34Å pitch with a rise per base pair of 3.4Å is called
Show Answer

Q470) The catalytic efficiency of two different enzymes can be compared by the Show Answer

Q471) A competitive inhibitor, competes with the substrate, for the substrate binding site of enzymes due to its Show Answer

Q472) The most abundant molecule in cell, is Show Answer

Q473) The left handed DNA is called Show Answer

Q474) Adult human haemoglobin consists of Show Answer

Q475) Which enzyme is most specific? Show Answer

Q476) Chemical compounds which are found in the acid insoluble fraction are called
Show Answer

Q477) Lipids are generally
I. water soluble
II. water insoluble
III. soluble in non-polar organic solvents
IV. not soluble in non-polar organic solvents
Choose the correct options Show Answer

Q478) Nucleotides are formed by Show Answer

Q479) The substance, which is metal ion essential for the normal functioning of enzyme is called Show Answer

Q480) Water molecules are connected by Show Answer

Q481) The physical and the chemical compositions of amino acids are essentially of the Show Answer

Q482) The proteinaceous molecule that joins a non-proteinaceous prosthetic group to form a functional enzyme
is called Show Answer

Q483) Select the correct constituents of protein Show Answer

Q484) Enzymes, vitamins and hormones can be classified into a single category of biological chemicals,
because all of these Show Answer

Q485) Many physiological functions are performed by proteins. One such function involves that some proteins
discharge Show Answer

Q486) One full turn of the helical strand involves … steps Show Answer

Q487) One strand of DNA has sequence of nucleotide 3’ ATTCGCTAT 5’ then other strand of DNA has Show Answer

Q488) In a protein molecule, the amino acid units are linked together by ……... bonds formed between the amino
acid units and the carboxyl group of successive amino acids Show Answer

Q489) Identify wheather the given statements are true or false
I. A protozoan contains thousand of organic compounds
II. Concentration of biomolecules in an organism is not fixed Show Answer

Q490) Michaelis Menten constant (km) is equal to
Show Answer

Q491) Which one of the following amino acids was not found to be synthesized in Miller’s experiement? Show Answer

Q492) Which of the following amino acids is not optically active? Show Answer

Q493) What provides roughage (fibre) in our diet? Show Answer

Q494) Starch can be used as an indicator for the detection of traces of Show Answer

Q495) Pick the odd statement out Show Answer

Q496) Which one is the sweetest sugar? Show Answer

Q497) Choose the correct graph showing, the effect of pH on the velocity of a typical enzymatic reaction (V)? Show Answer

Q498) In which one of the following sets of three items each belong to the category mentioned against
them? Show Answer

Q499) The inhibitor which binds to the enzyme at site other than the active site and do not resemble the
substrate in structure is called Show Answer

Q500) Biomolecules are constantly being changed into some other biomolecules and are made from …. Show Answer

Q501) A physical change, during a chemical reaction refers to Show Answer

Q502) Identify, in which of the following carbon compounds, heterocyclic rings can be found?
Show Answer

Q503) Hydrolysis of lipid yields? Show Answer

Q504) If all the peptide bonds of protein are broken, then the remaining part is Show Answer

Q505) In a polysaccharide, the individual monosaccharides are linked by a Show Answer

Q506) The free energy of a system, in a spontaneous reaction Show Answer

Q507) Inhibition of enzyme activity by a molecule, which reversibly modifies the structure of the active
site of the enzyme is called Show Answer

Q508) Pentoses and hexoses are common Show Answer

Q509) Which one of the following is polysaccharide? Show Answer

Q510) Oxygenic compounds of biological process, which activate chemical reactions are Show Answer

Q511) A product of metabolism is called a Show Answer

Q512) Starch and cellulose are compounds of many units of Show Answer

Q513) According to Watson-Crick model, DNA exists as a …A… . The two strands of polynucleotides are …B… . The
backbone is formed by the sugar …C…, …D… chain. The nitrogen bases are more or less …E… to this
backbone
Choose the correct options for the blanks A, B, C, D and E Show Answer

Q514) After grinding a living tissue in trichloroacetic acid and then straining it, you would obtain two fractions :
acid soluble pool and acid insoluble fraction. Acid insoluble fraction does not contains Show Answer

Q515) Choose the correct options Show Answer

Q516) Which of the following statement(s) are/is correct?
I. In the process of metabolism, all organic biomolecules are constantly being broken down but not being
built up through chemical reactions
II. A product of metabolism in called a metabolite, but not always
III. Metabolism is always known to built up new products
IV. Metabolism is the characteristic feature of non-living things Show Answer

Q517) The ‘Repeating unit’ of glycogen is Show Answer

Q518) Every chemical (metabolic) reaction is a … reaction Show Answer

Q519) Which of the following secondary metabolites are used as drugs? Show Answer

Q520) Enzymes are most functional at the temperature range of Show Answer

Q521) One of the major feature of metabolic reaction is that they are…
Show Answer

Q522) Which of these is not a ketone body? Show Answer

Q523) Which of the following is not a cell inclusion? Show Answer

Q524) Which of the following is incorrect? Show Answer

Q525) Identify wheather the given conditions are anabolic or catabolic
I. Glucose → Lectic acid
II. Amino acids → Proteins Show Answer

Q526) Choose the correct statement Show Answer

Q527) Pick out the wrong statement Show Answer

Q528) Each active sites in enzyme is bounded by how many amino acids?
Show Answer

Q529) Select the wrong statement Show Answer

Q530) The simple polyhydroxy ketone molecule containing 3-7 carbons is a Show Answer

Q531) Primary structure of proteins is due to the presence of Show Answer

Q532) Removal of amino group from an amino acid is known as Show Answer

Q533) The tightly bound non-proteinaceous organic compound in enzyme, is
Show Answer

Q534) Why living state cannot afford to reach equilibrium? Show Answer

Q535) Chemical compounds that have molecular weights less than one thousand dalton are usually referred to as Show Answer

Q536) Find out the wrongly matched pair. Show Answer

Q537) The bond present between two carbohydrate molecules is Show Answer

Q538) Enzyme having different molecular arrangement but similar functions is Show Answer

Q539) Which is an organic compound found in most cells?
Show Answer

Q540) Select the correct which represents the homopolysaccharides made up of glucose monomers Show Answer

Q541) A high fever is dangerous to humans because Show Answer

Q542) All enzymes are basically Show Answer

Q543) In a DNA, ‘A’ base pairs with …by… H bonds.
Chooses the correct option for the blanks A and B
Show Answer

Q544) …… is a heteropolymer Show Answer

Q545) Those nucleic acids which behave like enzymes are known as Show Answer

Q546) How many of the twenty two amino acids are essential for children? Show Answer

Q547) Raffinose is a Show Answer

Q548) Example of a typical homopolysaccharide is Show Answer

Q549) Ribozymes are ….. molecules that function as biocatalysts in modern cells Show Answer

Q550) Types of amino acids found in proteins are Show Answer

Q551) Select the correct graph which shows the relationship between the rate of an enzymatic activity and
substrate concentration Show Answer

Q552) The effectiveness of an enzyme is affected least by Show Answer

Q553) A mathematical explanation for enzyme action on substrate was formulated by Show Answer

Q554) Insulin is a polymer of Show Answer

Q555) The most important form of energy currency in living organisms is the bond energy in the chemical called
….. Show Answer

Q556) An example of competitive inhibition of an enzyme is the inhibition of Show Answer

Q557) The amino acids are acidic, basic and neutral based on the number of Show Answer

Q558) The type of bond involved in the formation of sodium chloride, is Show Answer

Q559) Select the correct option that identifies the nature of apoenzyme and co-factor correctly Show Answer

Q560) The double helical model of the DNA was proposed by Watson and Crick based on what data
produced by Wilkins and Franklin? Show Answer

Q561) Arrange the steps of catalytic action of an enzyme in order and choose the correct option.
I. The enzyme releases the products of the reaction and the enzyme is free for another
substrate.
II. The active site of enzyme is in close proximity of the substrate and breaks of chemical bonds
of the substrate.
III. The binding of substrate induces the enzyme to alter its shape fitting more tightly around the
substrate.
IV. The substrate binds to the active site of the enzyme fitting into the active site.
Show Answer

Q562) How many carbon atoms generally take part in the formulation of monosaccharides? Show Answer

Q563) Enzymes catalysts differ from inorganic catalysts in which way? Show Answer

Q564) Select the correct graph, which shows the effect of temperature on the velocity of a typical enzymatic
reaction Show Answer

Q565) Malonate inhibits succinate dehydrogenase, is an example of Show Answer

Q566) Which disaccharide has different linkage? Show Answer

Q567) Which one of the following is not a fibrillar protein? Show Answer

Q568) The rate of physical or chemical process can be defined as Show Answer

Q569) Enzymes that catalyses the removal of groups from substrates by mechanism other than hydrolysis,
addition of groups to double bonds are called Show Answer

Q570) Which of the following is not a coenzyme? Show Answer

Q571) The DNA in which the base sequence of one strand is opposite to that of other strand when read from
opposite direction is called Show Answer

Q572) The enzyme part, which combines with non-protein part to form a functional enzyme, is known
as Show Answer

Q573) Which of the following statements are true?
I. Genetic RNA occurs in certain viruses called ribovirus
II. RNA of riboviruses may be single stranded
III. Double stranded RNA may also be present in riboviruses
Show Answer

Q574) Lactose is composed of following components Show Answer

Q575) Holoenzyme is a/an Show Answer

Q576) One feature common to all the compounds found in the acid soluble pool is
Show Answer

Q577) Which of the following statements are correct? Show Answer

Q578) Statement 1: Anabolism is the process by which the large, complex chemical compounds are built up
from the small simpler compounds in the body of a living organism
Statement 2: Anabolism is an exergonic process. It results in consumption of organic compounds and
decrease in the body weight Show Answer

Q579) Given below the two sets of statements
Identify wheather they are correct or incorrect
Statement 1: In living system, all the metabolic conversions are aided by catalysis
Statement 2: The catalysis which hasten the rate of a given metabolic conversation are not proteins Show Answer

Q580) Statement 1: A coenzyme or metal ion that is very tightly bound to enzyme protein is called
prosthetic group.
Statement 2: A complete catalytically active enzyme together with its bound prosthetic group is
called apoenzyme. Show Answer

Q581) Statement 1: The cellular pool provides all the necessary materials for the structure and functions of a
cell
Statement 2: For the survival of a cell, steady state within the cell is necessary Show Answer

Q582) Statement 1: Arachidic acid is an unsaturated fatty acid.
Statement 2: There are one or more double bonds between carbon atoms in unsaturated fatty
acids. Show Answer

Q583) Statement 1: Seven amino acids are referred to as essential amino acids for humans
Statement 2: They are essential for human health Show Answer

Q584) Statement 1: In healthy state of a living organism, metabolites flow is very smooth and flawless
Statement 2: Metabolities are converted into each other in a series of linked reactions Show Answer

Q585) Which one of the following enzymes contains 'Haem' as the prosthetic group?
Show Answer

Q586) The protein portion of an enzyme is called:
Show Answer

Q587) Lecithin, a small molecular weight organic compound found in living
tissues, is an example of: Show Answer

Q588) Which of the following is a nucleotide? Show Answer

Q589) Ligases is a class of enzymes responsible for catalysing the linking
together of two compounds.
Which of the following bonds is not catalysed by it? Show Answer

Q590) Which of the following are not fatty acids?
A. Glutamic acid
B. Arachidonic acid
C. Palmitic acid
D. Lecithin
E. Aspartic acid
Choose the correct answer from the options given below : Show Answer

Q591) Which of the following graphs depicts the effect of substrate
concentration on velocity of enzyme catalysed reaction? Show Answer

Q592) Enzymes that catalyse the removal of groups from substrates by
mechanisms other than hydrolysis leaving double bonds, are known as : Show Answer

Q593) The cofactor of the enzyme carboxypeptidase is: Show Answer

Q594) Inhibition of Succinic dehydrogenase enzyme by malonate is a classical
example of: Show Answer

Q595) Regarding catalytic cycle of an enzyme action, select the correct
sequential steps :
A. Substrate enzyme complex formation.
B. Free enzyme ready to bind with another substrate.
C. Release of products.
D. Chemical bonds of the substrate broken.
E. Substrate binding to active site.
Choose the correct answer from the options given below : Show Answer

Q596) Cellulose does not form blue colour with lodine because Show Answer

Q597) Melonate inhibits the growth of pathogenic bacteria by inhibiting the
activity of Show Answer

Q598) Given below are two statements :
Statement I : Low temperature preserves the enzyme in a temporarily
inactive state whereas high temperature destroys enzymatic activity
because proteins are denatured by heat.
Statement II : When the inhibitor closely resembles the substrate in its
molecular structure and inhibits the activity of the enzyme, it is known
as competitive inhibitor.
In the light of the above statements, choose the correct answer from the
options given below : Show Answer

Q599) Given below are two statements:
Statement I: A protein is imagined as a line, the left end represented by
first amino acid (C-terminal) and the right end represented by last
amino acid ( N-terminal).
Statement II: Adult human haemoglobin, consists of 4 subunits (two
subunits of α type and two subunits of β type.)
In the light of the above statements, choose the correct answer from the
options given below Show Answer

Q600) Which of the following is not a secondary metabolite? Show Answer

Q601) Primary proteins are also called as polypeptides because: Show Answer

Q602) Given below are two statements : Statement I : Amino acids have a
property of ionizable
nature of — NH2 and — COOH groups, hence
have different structures at different pH.
Statement II : Amino acids can exist as Zwitterionic form at acidic and
basic pH. In the Light of the above statements, choose the most
appropriate answer from the options
given below : Show Answer

Q603) Read the following statements on lipids and find out correct set of
statements:
(a) Lecithin found in the plasma membrane is a glycolipid
(b) Saturated fatty acids possess one or more c = c bonds
(c) Gingely oil has lower melting point, hence remains as oil in winter
(d) Lipids are generally insoluble in water but soluble in some organic
solvents
(e) When fatty acid is esterified with glycerol, monoglycerides are
formed
Choose the correct answer from the option given below: Show Answer

Q604) Which of the following are not secondary metabolites in plants? Show Answer

Q605) Following are the statements with reference to 'lipids'.
(a) Lipids having only single bonds are called unsaturated fatty acids
(b) Lecithin is a phospholipid.
(c) Trihydroxy propane is glycerol.
(d) Palmitic acid has 20 carbon atoms including carboxyl carbon.
(e) Arachidonic acid has 16 carbon atoms.
Choose the correct answer from the options given below. Show Answer

Q606) Identify the substances having glycosidic bond and peptide bond,
respectively in their structure Show Answer

Q607) “Ramachandran plot” is used to confirm the structure of Show Answer

Q608) Purines found both in DNA and RNA are: Show Answer

Q609) Prosthetic groups differ from co-enzymes in that- Show Answer

Q610) Which of the following glucose transporters is insulin-dependent? Show Answer

Q611) Consider the following statements:
a) Coenzyme or metal ion that is tightly bound to enzyme protein is
called prosthetic group.
b) A complete catalytic active enzyme with its bound prosthetic group is
called apoenzyme.
Select the correct option. Show Answer

Q612) The two functional groups characteristic of sugars are Show Answer

Q613) Which of the following statements is correct with reference to enzymes? Show Answer

Q614) Which of the following are not polymeric? Show Answer

Q615) A non-proteinaceous enzyme is Show Answer

Q616) Which of the following is the least likely to be involved in stabilising the
three-dimensional folding of most proteins? Show Answer

Q617) A typical fat molecule is made up of Show Answer

Q618) Which one of the following statements is wrong? Show Answer

Q619) The chitinous exoskeleton of arthropods is formed by the polymerisation
of Show Answer

Q620) Which of the following biomolecules does have a phosphodiester bond? Show Answer

Q621) Which one of the following statements is incorrect? Show Answer

Q622) If A and C make 30% and 20% of DNA, respectively, what will be the
percentage composition of T . and G ? Show Answer

Q623) If the length of a DNA molecule is 1.1 metres, what will be the
approximate number of base pairs? Show Answer

Q624) If Adenine makes 30% of the DNA molecule, what will be the percentage
of Thymine, Guanine and Cytosine in it? Show Answer

Q625) Which of the following statements is correct? Show Answer

Q626) Which one of the following is not applicable to RNA? Show Answer

Q627) In sea urchin DNA,Which is double stranded,17 % of the bases were
shown to be cytosine.The percentage of the other three bases excepted
to be present in this DNA are :- Show Answer

Q628) Alpha-helix is found in which level of protein structure?

Show Answer

Q629) Identify the correct statements about biomolecules.
A. Lipids are generally water soluble.
B. Proteins are polypeptides.
C. Polysaccharides are long chains of sugars.
D. Adenine and guanine are substituted pyrimidines.
E. Almost all enzymes are proteins.
Choose the correct answer from the options given below:
Show Answer

Q630) Which of the following statements are correct regarding amino acids?
A. They are substituted methanes..
B. Serine is an aromatic amino acid.
C. Valine is a neutral amino acid.
D. Lysine is an acidic amino acid.
Choose the correct answer from the options given below:
Show Answer

Q631) Match List I with List II: Choose the correct answer from the options given below:
Show Answer