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) Hyaluronic acid is present in which of the following mammalian organs ? Show Answer


Q43) Which one of the following is a heteropolysaccharide ? Show Answer


Q44) The sugar found as reserve food in grapes is Show Answer


Q45) The sugar found in the medullary sheath of nerve fibers is Show Answer


Q46) The sugar found in nectar and honey is Show Answer


Q47) Which of the following statement is true ? Show Answer


Q48) Glycans are Show Answer


Q49) _________ is animal starch Show Answer


Q50) A homopolysaccharide containing polymer of galactose and used as a base for culture media. Show Answer


Q51) Which among the following is a heteropolysaccharide ? Show Answer


Q52) Fungal cellulose also found in the exoskeleton of crabs, prawns etc is Show Answer


Q53) Cell wall of bacteria and cyanobacteria is formed of Show Answer


Q54) A heteropolysaccharide anti-coagulant found in blood is Show Answer


Q55) Proteins are the long chain polymers of Show Answer


Q56) The term 'Protein' is derived from the Greek word 'Proteious' which means Show Answer


Q57) The term 'Protein' was coined by Show Answer


Q58) Proteins Show Answer


Q59) The molecular weight of haemoglobin is Show Answer


Q60) The difference among species is due to the difference in its ________ components. Show Answer


Q61) The number of proteins in a bacterial cell is over Show Answer


Q62) The number of proteins in human cells is over Show Answer


Q63) Proteins do not have Show Answer


Q64) The total number of amino acids is Show Answer


Q65) The total number of essential amino acids which can not be synthesized by organisams within their body is Show Answer


Q66) A peptide bond is formed between _______ and _________ of two amino acids respectively. Show Answer


Q67) Amino acids are amphoteric in nature. This means that Show Answer


Q68) The bond between two amino acid molecules in proteins is Show Answer


Q69) Peptide bond is formed by ________ of water molecules between two amino acids. Show Answer


Q70) In a polypeptide chain, the end containing free amino group is Show Answer


Q71) During elongation of polypeptide chain, an new amino acid can be added at Show Answer


Q72) The polypeptide chains are folded using Show Answer


Q73) Proteins having only amino acids or their derivatives are Show Answer


Q74) Proteins having only amino acids with non-protein prosthetic group are Show Answer


Q75) Find the FALSE statement. Show Answer


Q76) The protein present in hair and skin is Show Answer


Q77) The protein present in muscles is Show Answer


Q78) The protein present in the cell membrane of animals is Show Answer


Q79) Muscles contract with help of Show Answer


Q80) Coagulation or clotting of blood occurs due to Show Answer


Q81) The protein in blood which gives resistance to diseases is Show Answer


Q82) A simple protein zein is found in Show Answer


Q83) Histone proteins are Show Answer


Q84) Histone proteins are associated with Show Answer


Q85) Egg yolk contains _______ in large quantities. Show Answer


Q86) The term 'Lipid' was coined by Show Answer


Q87) Lipids are Show Answer


Q88) which of the following is TRUE about lipids ? Show Answer


Q89) Waxes are produced by Show Answer


Q90) Lipids contain Show Answer


Q91) Chemically lipids are Show Answer


Q92) The proportion of hydrogen : Oxygen in lipids is Show Answer


Q93) Lipids contain Show Answer


Q94) Lipids contain Show Answer


Q95) Which of the following is not type of lipid ? Show Answer


Q96) Fatty acids has a Show Answer


Q97) Triglycerides contain Show Answer


Q98) Triglycerides are Show Answer


Q99) Simple lipids are further classified on the basis of number of Show Answer


Q100) The saturated fatty acids have Show Answer


Q101) The unsaturated fatty acids have Show Answer


Q102) Find the FALSE statement about unsaturated fats Show Answer


Q103) Find the True statement about saturated fats. Show Answer


Q104) Compound lipid contain Show Answer


Q105) Lipids present in the cell membrane are Show Answer


Q106) Which of the following is a hydrolytic product of lipids ? Show Answer


Q107) Each molecule of a steroid has carbon atoms arranged in ________ interlocking rings. Show Answer


Q108) Which of the following is a derived lipid with four interlocking rings ? Show Answer


Q109) The steroid component present in bile salt is Show Answer


Q110) The precursor of sex hormone is Show Answer


Q111) Which of the following is required for vitamin D synthesis ? Show Answer


Q112) Plant waxes do not contain Show Answer


Q113) Plant waxes contain Show Answer


Q114) Plant waxes Show Answer


Q115) Plant waxes are secreted by ________ layer. Show Answer


Q116) Carotenoids contain Show Answer


Q117) Carotenoids are Show Answer


Q118) Carotenoids mainly help in the process of Show Answer


Q119) Carotenoids are present in Show Answer


Q120) Carotenoids are found in Show Answer


Q121) Fredrick Meischer Show Answer


Q122) The term 'nucleic acid' was coined by Show Answer


Q123) Fredrick Meischer coined the term Show Answer


Q124) Meischer discovered nucleic acids from Show Answer


Q125) Genetic material in viruses is Show Answer


Q126) Nucleic acids occur in Show Answer


Q127) In the cells, nucleic acids occur in Show Answer


Q128) Nucleic acids are Show Answer


Q129) Purines are Show Answer


Q130) Pyrimidines are Show Answer


Q131) Nitrogen bases in DNA are Show Answer


Q132) The nitrogenous bases are linked to sugar by Show Answer


Q133) DNA is acidic in nature due to Show Answer


Q134) DNA differs from RNA in Show Answer


Q135) Chemically RNA differs from DNA in having Show Answer


Q136) The similarity between DNA and RNA is that, they have Show Answer


Q137) Sugar and nitrogen base linked by glycosidic bond is known as Show Answer


Q138) Phosphoric esters of nucleosides are known as Show Answer


Q139) A complex formed by de-oxyribose sugar, phosphate and nitrogen base is Show Answer


Q140) A nucleotide treated with enzyme phosphate will yield Show Answer


Q141) A nitrogen base with a double ring can be attached to a pentose sugar in Show Answer


Q142) Which of the following exist in pairs in DNA ? Show Answer


Q143) Phosphodiester linkage is present between Show Answer


Q144) Which of the following are complementary nitrogen bases ? Show Answer


Q145) The complementary nitrogen bases in DNA are joined by Show Answer


Q146) Purine and Pyrimidine ratio is Show Answer


Q147) X-ray diffraction studies of DNA was performed by Show Answer


Q148) Who had proposed the double helix structure of DNA ? Show Answer


Q149) According to Watson and Crick, DNA Show Answer


Q150) The two strands of DNA are Show Answer


Q151) In a DNA molecule, which of the following statement is not true ? Show Answer


Q152) In eukaryotic cell, DNA is found in Show Answer


Q153) DNA contains all the information needed for Show Answer


Q154) Which of the following is a FALSE statement about DNA ? Show Answer


Q155) The genetic material in most plant viruses is Show Answer


Q156) RNA is Show Answer


Q157) The hereditary material in tobacco mosaic virus is a Show Answer


Q158) The hereditary material in tobacco mosaic virus was discovered by Show Answer


Q159) DNA and RNA are similar as they both Show Answer


Q160) Which of the following is not found in RNA ? Show Answer


Q161) Which of the following contains uridylic acid ? Show Answer


Q162) In RNA, Show Answer


Q163) m-RNA, t-RNA and r-RNA are they types of Show Answer


Q164) m-RNA, t-RNA and r-RNA are present in the organisms which have Show Answer


Q165) The non-genetic RNA formed from Show Answer


Q166) Which of the following is a linear molecule ? Show Answer


Q167) Which of the following is a linear molecule folded at certain regions ? Show Answer


Q168) Which of the following has a hair pin structure ? Show Answer


Q169) Which of the following has a clover leaf structure ? Show Answer


Q170) The smallest non-genetic RNA is Show Answer


Q171) The longest non-genetic RNA is Show Answer


Q172) The most abundant non-genetic RNA is Show Answer


Q173) The least abundant non-genetic RNA is Show Answer


Q174) Which of the following is soluble RNA ? Show Answer


Q175) m-RNA forms about _________ of the total cell RNA. Show Answer


Q176) r-RNA forms about _________ of the total cell RNA. Show Answer


Q177) _________forms about 10-15% of the total cell RNA. Show Answer


Q178) The process of transcription produces Show Answer


Q179) A = U is present in Show Answer


Q180) __________ carries activated amino acids to ribosomes. Show Answer


Q181) The most active RNA during translation is Show Answer


Q182) Maximum amount of RNA is present in Show Answer


Q183) The term 'enzyme' was coined by Show Answer


Q184) The word 'enzyme' means Show Answer


Q185) The first person to isolated urease in pure crystalline form was Show Answer


Q186) Urease was isolated in a crystalline form from Show Answer


Q187) The enzymes which are produced and act at the same site are Show Answer


Q188) The enzymes which are produced at one side but act far away are Show Answer


Q189) Enzymes Show Answer


Q190) What is not TRUE about enzymes ? Show Answer


Q191) Chemically most of the enzymes are Show Answer


Q192) Enzymes can react with Show Answer


Q193) Enzymes have Show Answer


Q194) A single enzymes can act on Show Answer


Q195) The molecule of an enzyme is ________ the molecule of substrate. Show Answer


Q196) The specific part of enzyme molecule which comes in contract with the substrate molecule is Show Answer


Q197) The enzyme invertase acts on Show Answer


Q198) The enzyme urease acts on Show Answer


Q199) Enzymes are Show Answer


Q200) The gel like nature of enzymes provide a Show Answer


Q201) In enzymes, the size of dispersion medium is _______ the size of dispersion particles. Show Answer


Q202) Enzyme optima includes Show Answer


Q203) Which of the following effect does temperature have on enzyme activity ? Show Answer


Q204) If an enzyme is frozen and kept below its freezing point, it is Show Answer


Q205) __________ increase in temperature increases enzyme activity. Show Answer


Q206) Most of the intracellular enzymes are active at Show Answer


Q207) In which of these conditions enzymes do not get denatured ? Show Answer


Q208) Enzymes are denatured when the ________ bonds are broken. Show Answer


Q209) Normally enzymes are proteins. The non protein enzyme is Show Answer


Q210) The substance which acts as a competitive inhibitor of enzymes Show Answer


Q211) The competitive inhibition of enzymes Show Answer


Q212) The substance which acts as a non-competitive inhibitor of enzymes Show Answer


Q213) The non-competitive inhibition of enzymes Show Answer


Q214) The enzymes can be poisoned by Show Answer


Q215) In cyanide poisoning, the inhibitor Show Answer


Q216) Cellular pool is Show Answer


Q217) Which of the following about monosaccharides is UNTRUE ? Show Answer


Q218) Trioses, tetroses and pentose are Show Answer


Q219) Maltose is Show Answer


Q220) The carbohydrate forming 90% of cotton fibers, 20-25% wood and paper from paper pulp is Show Answer


Q221) Which of the following statement about protein is UNTRUE ? Show Answer


Q222) The simplest amino acid is Show Answer


Q223) Phenylalanine, tyrosine, proline are Show Answer


Q224) Which of the following is statement INCORRECT ? Show Answer


Q225) Find the CORRECT statement. Show Answer


Q226) The FALSE statement about lipids is Show Answer


Q227) Find the ODD one out. Show Answer


Q228) As compared to DNA pentose sugar, the RNA pentose sugar has Show Answer


Q229) Find the ODD one out from the following based on its chemical structure. Show Answer


Q230) Find the ODD one out with reference to DNA. Show Answer


Q231) The phosphate group in nucleic acids is provided by Show Answer


Q232) Which of the following is found both in DNA and RNA? Show Answer


Q233) Which one of the following is a nucleotide ? Show Answer


Q234) Successive nucleotides of the same strand of DNA are joined by Show Answer


Q235) Which of the following is TRUE ? Show Answer


Q236) 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


Q237) In a DNA molecule, if the percentage of thymine is 22%, then guanine will be Show Answer


Q238) Which staement is not TRUE about enzymes ? Show Answer


Q239) Lipid are found in acid insoluble fraction during the analysis of chemical composition of tissues. Given the
reason Show Answer


Q240) Choose the element which is negligible in living matter Show Answer


Q241) Name the plant pigments present in the following
I. Carrots
II. Tomatoes Show Answer


Q242) Silk consists of
Show Answer


Q243) Which statement regarding coenzyme is incorrect? Show Answer


Q244) The rate of the reaction doubles or decreases by half, for every… °C change in either direction Show Answer


Q245) 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


Q246) Which one is imino acid? Show Answer


Q247) The sum total composition of acid soluble and acid insoluble fraction pool represents the
Show Answer


Q248) The ‘lock’ and ‘key’ model of enzyme action illustrates that a particular enzyme molecule Show Answer


Q249) After doing the chemical analysis of organic compounds found in living organisms, two fractions were
observed namely
Show Answer


Q250) Which one is not an example for hydrolases?
Show Answer


Q251) Which type of protein is present in human skin? Show Answer


Q252) The metabolic flow is called Show Answer


Q253) The pyrimidine base, which confers additional stability to DNA over RNA, is Show Answer


Q254) 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


Q255) An enzyme extract when subjected to electric field, separates into two fractions each catalyzing
the same reaction. These fractions are Show Answer


Q256) Amino acids the substituted methanes. Name the four substituent groups occupying the four valency positions Show Answer


Q257) The ‘lock’ and ‘key’ theory of enzyme structure and function was proposed by Show Answer


Q258) Histone octamer contains Show Answer


Q259) What is grape sugar? Show Answer


Q260) Pepsin is an ……enzyme Show Answer


Q261) Which one is a polymer? Show Answer


Q262) 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


Q263) Which is a reducing sugar? Show Answer


Q264) Formation of glycogen from glucose is called
Show Answer


Q265) 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


Q266) 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


Q267) Arachidonic acid is Show Answer


Q268) Inulin is a polymer of Show Answer


Q269) Table sugar consists of Show Answer


Q270) For nucleic acids, the building block is a Show Answer


Q271) An example of feedback inhibition is Show Answer


Q272) The term metabolism means Show Answer


Q273) Chitin is a Show Answer


Q274) Richest energy compound is Show Answer


Q275) Select the wrong statement. Show Answer


Q276) Which of the following is an essential amino acids? Show Answer


Q277) The aggregation of the various kinds of biomolecules in a cell is referred to as the Show Answer


Q278) Secondary metabolites can be observed in Show Answer


Q279) 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


Q280) What is the starting point in the production of food? Show Answer


Q281) Name the heterocyclic compounds which are known as nitrogenous bases
Choose the most appropriate options Show Answer


Q282) In which one of the following enzymes copper is necessarily associated as an activator? Show Answer


Q283) 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


Q284) ‘G’ in DNA strand base pairs with ‘C’ by 3… bonds Show Answer


Q285) 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


Q286) Select the correct pair of substituted purines Show Answer


Q287) Which one of the following is wrongly matched? Show Answer


Q288) Enzymes that catalyze inter-conversion of optical, geometrical or positional isomers, are
Show Answer


Q289) All the carbon compounds obtained from living tissues are named as Show Answer


Q290) A fatty acid has a carboxyl group attached to R group. The R group could be a Show Answer


Q291) With reference to enzymes, which one of following statements is true? Show Answer


Q292) Benedict’s reagent test is conducted to confirm the presence of Show Answer


Q293) When a metabolic disequilibrium is in effect, then only cells continue to function
How do cells avoid reaching metabolic equilibrium? Show Answer


Q294) Which of the following radioisotope is not suitable for DNA labeling based studies? Show Answer


Q295) Jacob and Monod named some enzymes as allosteric, whose activity is regulated by Show Answer


Q296) Identify the term ‘ash’ in term of living tissue sample analysis from the statements given below Show Answer


Q297) 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


Q298) Formation of lactic acid form glucose occurs in… metabolic steps Show Answer


Q299) A nucleotide has three chemically distinct compounds. These are A, B and C
Choose the correct option for A, B and C Show Answer


Q300) 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


Q301) Which of the following is not a conjugated protein? Show Answer


Q302) …….. is the most abundant protein in whole of the biosphere Show Answer


Q303) Which enzyme is useful as colour brightening agent in detergent industry? Show Answer


Q304) Locations or sites in the human DNA where single base DNA differences occur, are called Show Answer


Q305) An organic substance bound to an enzyme and essential for its activity, is called Show Answer


Q306) 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


Q307) Maltose consists of which one of the following?
Show Answer


Q308) Mannitol is Show Answer


Q309) Almost all enzymes are … in nature
Show Answer


Q310) One of the secondary structures exhibited by DNA is….. Show Answer


Q311) Feedback inhibition of enzymes is affected by which of the following? Show Answer


Q312) All the chemical reactions occurring in living organisms are called Show Answer


Q313) 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


Q314) The tertiary structure of the proteins containing amino acid cysteine is achieved through
Show Answer


Q315) Maltose gives rise to two molecules of Show Answer


Q316) One of the following is a simple protein. Show Answer


Q317) 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


Q318) Which one is diaminodicarboxylic amino acid? Show Answer


Q319) 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


Q320) Which amino acid is denoted by symbol ‘F’? Show Answer


Q321) Which enzyme catalyse the break down of hydrogen peroxide to water and oxygen? Show Answer


Q322) Sugar and amino acids are Show Answer


Q323) Which of the following statements regarding enzyme inhibition is correct?
Show Answer


Q324) Enzymes are functional at Show Answer


Q325) Cellulose is made up of Show Answer


Q326) Which of the following statements is wrong? Show Answer


Q327) Name the four elements called ‘Big-four’ which make up 95% of all elements found in a living system Show Answer


Q328) Proteins are heteropolymers which are madeup of …… type of monomers of amino acids Show Answer


Q329) Catabolic and anabolic pathways are often coupled in cell. Why? Show Answer


Q330) Molecular weight of protein is Show Answer


Q331) Name the disaccharide which is the major sugar of insect haemolymph Show Answer


Q332) One turn of DNA has nucleotide pairs Show Answer


Q333) Phospholipids are Show Answer


Q334) Why metabolic pathways are comparable to automobile traffic in a city? Show Answer


Q335) A bond formed between carboxyl group of one amino acid and amino group of adjacent amino
acid, is called
Show Answer


Q336) In animal tissues, the categories of compounds present are called
Show Answer


Q337) Cellulose is a polymer of Show Answer


Q338) Proteins with catalytic power are called Show Answer


Q339) The enzyme which converts corn starch into fructose rich corn syrup is Show Answer


Q340) The globular proteins undergo structural changes, in response to extremes of pH or temperature,
the process called Show Answer


Q341) Which of the following is a disaccharide? Show Answer


Q342) During Meselson and Stahl’s experiments, heavy DNA was distinguished from normal DNA by
centrifugation in Show Answer


Q343) Protein in silk thread is Show Answer


Q344) What are proenzymes? Show Answer


Q345) Which of the following is the simplest amino acid? Show Answer


Q346) Hydrolysis of a glycosidic bond in a disaccharide is an example of Show Answer


Q347) Which of the following is non-reducing sugar? Show Answer


Q348) Phospholipids are Show Answer


Q349) Richest source of protein is Show Answer


Q350) Which of the following polysaccharide is present as a store house of energy in plant tissues? Show Answer


Q351) Which form of keratin is present in human hair? Show Answer


Q352) The most abundant chemical in living organisms is Show Answer


Q353) Basic structure of proteins was given by Show Answer


Q354) Name the most abundant protein in animal world Show Answer


Q355) Which of the following is the example of structural protein? Show Answer


Q356) 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


Q357) Enzymes catalyses the biochemical reactions by …… the activation energy Show Answer


Q358) Answer briefly
I. Which colour glycogen gives on its reaction with iodine solution?
II. What is satellite DNA?
III. Name three components of a nucleotide molecule
Correct option will all answers is Show Answer


Q359) The acid soluble pool, roughly represents
Show Answer


Q360) Choose the type of enzyme involved in the following reaction
S − G + S′ → S + S′ − G Show Answer


Q361) Which of the following is an isozyme? Show Answer


Q362) Primary metabolites play known roles in Show Answer


Q363) Sucrose, a common table sugar is composed of Show Answer


Q364) Double sugar is Show Answer


Q365) Variety of amino acids are formed on the basis of Show Answer


Q366) Carbohydrates, the most abundant biomolecules earth, are produced by
Show Answer


Q367) Where the starch is stored in the plant cell? Show Answer


Q368) The form of DNA with 34Å pitch with a rise per base pair of 3.4Å is called
Show Answer


Q369) The catalytic efficiency of two different enzymes can be compared by the Show Answer


Q370) A competitive inhibitor, competes with the substrate, for the substrate binding site of enzymes due to its Show Answer


Q371) The most abundant molecule in cell, is Show Answer


Q372) The left handed DNA is called Show Answer


Q373) Adult human haemoglobin consists of Show Answer


Q374) Which enzyme is most specific? Show Answer


Q375) Chemical compounds which are found in the acid insoluble fraction are called
Show Answer


Q376) 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


Q377) Nucleotides are formed by Show Answer


Q378) The substance, which is metal ion essential for the normal functioning of enzyme is called Show Answer


Q379) Water molecules are connected by Show Answer


Q380) The physical and the chemical compositions of amino acids are essentially of the Show Answer


Q381) The proteinaceous molecule that joins a non-proteinaceous prosthetic group to form a functional enzyme
is called Show Answer


Q382) Select the correct constituents of protein Show Answer


Q383) Enzymes, vitamins and hormones can be classified into a single category of biological chemicals,
because all of these Show Answer


Q384) Paraffin wax is Show Answer


Q385) Many physiological functions are performed by proteins. One such function involves that some proteins
discharge Show Answer


Q386) One full turn of the helical strand involves … steps Show Answer


Q387) One strand of DNA has sequence of nucleotide 3’ ATTCGCTAT 5’ then other strand of DNA has Show Answer


Q388) 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


Q389) 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


Q390) Michaelis Menten constant (km) is equal to
Show Answer


Q391) Which one of the following amino acids was not found to be synthesized in Miller’s experiement? Show Answer


Q392) Which of the following amino acids is not optically active? Show Answer


Q393) What provides roughage (fibre) in our diet? Show Answer


Q394) Starch can be used as an indicator for the detection of traces of Show Answer


Q395) Pick the odd statement out Show Answer


Q396) Which one is the sweetest sugar? Show Answer


Q397) Choose the correct graph showing, the effect of pH on the velocity of a typical enzymatic reaction (V)? Show Answer


Q398) In which one of the following sets of three items each belong to the category mentioned against
them? Show Answer


Q399) 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


Q400) Biomolecules are constantly being changed into some other biomolecules and are made from …. Show Answer


Q401) A physical change, during a chemical reaction refers to Show Answer


Q402) Identify, in which of the following carbon compounds, heterocyclic rings can be found?
Show Answer


Q403) Hydrolysis of lipid yields? Show Answer


Q404) If all the peptide bonds of protein are broken, then the remaining part is Show Answer


Q405) In a polysaccharide, the individual monosaccharides are linked by a Show Answer


Q406) The free energy of a system, in a spontaneous reaction Show Answer


Q407) Inhibition of enzyme activity by a molecule, which reversibly modifies the structure of the active
site of the enzyme is called Show Answer


Q408) Pentoses and hexoses are common Show Answer


Q409) Which one of the following is polysaccharide? Show Answer


Q410) Oxygenic compounds of biological process, which activate chemical reactions are Show Answer


Q411) A product of metabolism is called a Show Answer


Q412) Starch and cellulose are compounds of many units of Show Answer


Q413) 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


Q414) 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


Q415) Choose the correct options Show Answer


Q416) 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


Q417) The ‘Repeating unit’ of glycogen is Show Answer


Q418) Every chemical (metabolic) reaction is a … reaction Show Answer


Q419) Which of the following secondary metabolites are used as drugs? Show Answer


Q420) Enzymes are most functional at the temperature range of Show Answer


Q421) One of the major feature of metabolic reaction is that they are…
Show Answer


Q422) Which of these is not a ketone body? Show Answer


Q423) Which of the following is not a cell inclusion? Show Answer


Q424) Which of the following is incorrect? Show Answer


Q425) Identify wheather the given conditions are anabolic or catabolic
I. Glucose → Lectic acid
II. Amino acids → Proteins Show Answer


Q426) Choose the correct statement Show Answer


Q427) Pick out the wrong statement Show Answer


Q428) Each active sites in enzyme is bounded by how many amino acids?
Show Answer


Q429) Select the wrong statement Show Answer


Q430) The simple polyhydroxy ketone molecule containing 3-7 carbons is a Show Answer


Q431) Primary structure of proteins is due to the presence of Show Answer


Q432) Removal of amino group from an amino acid is known as Show Answer


Q433) The tightly bound non-proteinaceous organic compound in enzyme, is
Show Answer


Q434) Why living state cannot afford to reach equilibrium? Show Answer


Q435) Chemical compounds that have molecular weights less than one thousand dalton are usually referred to as Show Answer


Q436) Find out the wrongly matched pair. Show Answer


Q437) The bond present between two carbohydrate molecules is Show Answer


Q438) Enzyme having different molecular arrangement but similar functions is Show Answer


Q439) Which is an organic compound found in most cells?
Show Answer


Q440) Select the correct which represents the homopolysaccharides made up of glucose monomers Show Answer


Q441) A high fever is dangerous to humans because Show Answer


Q442) All enzymes are basically Show Answer


Q443) In a DNA, ‘A’ base pairs with …by… H bonds.
Chooses the correct option for the blanks A and B
Show Answer


Q444) …… is a heteropolymer Show Answer


Q445) Those nucleic acids which behave like enzymes are known as Show Answer


Q446) How many of the twenty two amino acids are essential for children? Show Answer


Q447) Raffinose is a Show Answer


Q448) Example of a typical homopolysaccharide is Show Answer


Q449) The aleurone layer in maize grain is specially rich in Show Answer


Q450) Ribozymes are ….. molecules that function as biocatalysts in modern cells Show Answer


Q451) Types of amino acids found in proteins are Show Answer


Q452) Select the correct graph which shows the relationship between the rate of an enzymatic activity and
substrate concentration Show Answer


Q453) The effectiveness of an enzyme is affected least by Show Answer


Q454) Fluidity of bio-membranes can be shown by Show Answer


Q455) A mathematical explanation for enzyme action on substrate was formulated by Show Answer


Q456) Insulin is a polymer of Show Answer


Q457) What is the approximate percentage of proteins in the cell contents? Show Answer


Q458) How does radiations inactivates enzymes? Show Answer


Q459) The fastest acting enzyme, in the biological kingdom, is Show Answer


Q460) The most important form of energy currency in living organisms is the bond energy in the chemical called
….. Show Answer


Q461) An example of competitive inhibition of an enzyme is the inhibition of Show Answer


Q462) The amino acids are acidic, basic and neutral based on the number of Show Answer


Q463) The type of bond involved in the formation of sodium chloride, is Show Answer


Q464) Allosteric modulation is due to inhibition action of enzyme by
Show Answer


Q465) Cholesterol is considered as a crucial molecule in animals because it is Show Answer


Q466) Select the correct option that identifies the nature of apoenzyme and co-factor correctly Show Answer


Q467) The double helical model of the DNA was proposed by Watson and Crick based on what data
produced by Wilkins and Franklin? Show Answer


Q468) 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


Q469) How many carbon atoms generally take part in the formulation of monosaccharides? Show Answer


Q470) Enzymes catalysts differ from inorganic catalysts in which way? Show Answer


Q471) Select the correct graph, which shows the effect of temperature on the velocity of a typical enzymatic
reaction Show Answer


Q472) Malonate inhibits succinate dehydrogenase, is an example of Show Answer


Q473) Which disaccharide has different linkage? Show Answer


Q474) Which one of the following is not a fibrillar protein? Show Answer


Q475) The rate of physical or chemical process can be defined as Show Answer


Q476) Enzymes that catalyses the removal of groups from substrates by mechanism other than hydrolysis,
addition of groups to double bonds are called Show Answer


Q477) Which of the following is not a coenzyme? Show Answer


Q478) 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


Q479) The enzyme part, which combines with non-protein part to form a functional enzyme, is known
as Show Answer


Q480) 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


Q481) Lactose is composed of following components Show Answer


Q482) Holoenzyme is a/an Show Answer


Q483) One feature common to all the compounds found in the acid soluble pool is
Show Answer


Q484) Which of the following statements are correct? Show Answer


Q485) 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


Q486) 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


Q487) 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


Q488) 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


Q489) 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


Q490) Statement 1: Seven amino acids are referred to as essential amino acids for humans
Statement 2: They are essential for human health Show Answer


Q491) 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