3593 + Interview Questions in BIOMOLECULES IN GENERAL AWARENESS Page 71 InterviewSolution

3501.	Match the vitamins given in column I with the deficiency disease caused by it given in column II and mark the appropriate choice A. `(A) to (iv),(B) to (iii), (C) to (i), (D) to (ii)`B. `(A) to (i), (B) to (iv) , (C) to (iii), (D) to (ii)`C. `(A) to (ii), (B) to (i), (C) to (iv),(D) to (iii)`D. `(A) to (iii), (B) to (iv) , (C) to (ii), (D) to (i)`
Answer» Correct Answer - D

Discussion

3502.	Match the name of vitamins in column I with their sources in column II and mark the appropriate choice . A. `(A) to (ii) , (B) to (iii), (C) to (iv), (D) to (i)`B. `(A) to (iii), (B) to (ii), (C) to (iv), (D) to (i)`C. `(A) to (iv), (B) to (iii), (C) to (ii), (D) to (i)`D. `(A) to (i), (B) to (ii), (C) to (iii), (D) to (iv)`
Answer» Correct Answer - D

Discussion

3503.	Which one of the following molecules will form zwitter ion?(a) CH3COOH (b) CH3CH2NH2 (c) CCl3NO2 (d) NH2CH2COOH
Answer» Option : (d) NH₂CH₂COOH

Discussion

3504.	In double helix model of DNA, the number of hydrogen bonds formed between guanine and cytosine isA. TwoB. OneC. ThreeD. Four
Answer» Correct Answer - C

Discussion

3505.	Match the column I with column II and mark the appropraite choice. A. `(A) to (ii), (B) to (i), (C) to (iii), (D) to (iv)`B. `(A) to (iv), (B) to (i), (C) to (ii), (D) to (iii)`C. `(A) to (iii), (B) to (iv), (C) to (i), (D) to (ii)`D. `(A) to (i), (B) to (iii), (C) to (iv), (D) to (ii)`
Answer» Correct Answer - C

Discussion

3506.	Amino acids are produced fromA. nucleic acidB. carbohydratesC. fatsD. proteins
Answer» Correct Answer - D (D) proteins on hydrolysis give `alpha`-amino acids `"Protein" overset("Hydrolysis")to "Peptides" overset("Hydrolysis")to alpha` -Amino acids.

Discussion

3507.	In metabolic press the maximum energy is given by :(a) carbohydrates (b) proteins (c) vitamins (d) fats
Answer» Option : (d) fats

Discussion

3508.	The double helix model of DNA was proposed byA. Har Gobind KhoranaB. Watson and CrickC. A.R. ToddD. G.W. kenner
Answer» Correct Answer - B

Discussion

3509.	Secondary structure of proteins refers toA. mainly denatured protein and structure of prosthetic groupsB. three dimensional structure, specially the bond between amino acid residues that are distant from each other in the polypeptide chainC. Linear sequence of amino acid residue in a polypeptide chainD. Regular folding patterns of continuous protions of the polypeptide chains.
Answer» Correct Answer - D The secondary structure proteins refers to regular folding patterns of contiguous portions of the polypeptide chain.

Discussion

3510.	In the preparation of glucose from cane sugar, alcoholic medium is necessary jtoA. get more yield of glucoseB. effect of separation of productC. act as catalystD. to make reaction faster
Answer» Correct Answer - B

Discussion

3511.	The enzymes which convert glucose into ethyl alcohol isA. zymaseB. InvertaseC. maltoseD. diastase
Answer» Correct Answer - A (A) Zymase converts glucose into entyl alcohol.

Discussion

3512.	The enzymes which convert glucose into ethyl alcohol isA. DiataseB. InvertaseC. MaltaseD. Zymase
Answer» Correct Answer - D Zymase converts glucose inot ethyl alcohol.

Discussion

3513.	Ethanolic hydrochloric acid is added in the preparation of glucose from sucrose becauseA. hydrochloric acid provides acidic mediumB. glucose is insoluble in ethanolC. fructose is soluble in ethanolD. all of these
Answer» Correct Answer - D

Discussion

3514.	Give scientific reasons :In the preparation of glucose from sucrose, ethyl alcohol is added at the time of cooling.
Answer» Hydrolysis of sucrose with dilute hydrahloric acid gives glucose along with fructose. Ethyl alcohol is added at the time of cooling in the preparation of glucose, to separate glucose from fructose. Glucose being insoluble in alcohol, crystallizes out first, while fructose being more soluble in alcohol, remains in the solution.

3514.

Give scientific reasons :In the preparation of glucose from sucrose, ethyl alcohol is added at the time of cooling.

Answer»

Hydrolysis of sucrose with dilute hydrahloric acid gives glucose along with fructose.

Ethyl alcohol is added at the time of cooling in the preparation of glucose, to separate glucose from fructose.

Glucose being insoluble in alcohol, crystallizes out first, while fructose being more soluble in alcohol, remains in the solution.

Discussion

3515.	Fill in the blanks : (ii)Many enzymes contain cetain ___ substances associated with them. There substances are called ____
Answer» Correct Answer - non-protein , cofactors

Discussion

3516.	Fill in the blanks : (iii)The fastest known enzyme is ____ found in red blood cells. It hydrates 36 millions molecules of `CO_2` to ___ and ___ in just a minute.
Answer» Correct Answer - Carbonic anhydrase, bicarbonate ions `(HCO_(3)^(-)), H^(+)`

Discussion

3517.	(a) which disaccharide is the major sugar of insect haemolymph. (b) Give atleast two examples of unsaturated fatty acids. ( c) Differentiate between saturated and unsaturated fatty acids (atleast 3 differences).
Answer» (a) Trehalose (b) linoleic acid and linolenic acid ( c) N/A

Discussion

3518.	What are fatty acids? Give two examples.
Answer» Fatty acids are compounds which has a carboxyl group attached to an R group. The R group could be a methyl (- CH₃), or ethyl (- C₂Hs) or higher number of – CH₂ groups (1 carbon to 19 carbons). Eg; Palmitic acid, Arachidonic acid.

3518.

What are fatty acids? Give two examples.

Answer»

Fatty acids are compounds which has a carboxyl group attached to an R group. The R group could be a methyl (- CH₃), or ethyl (- C₂Hs) or higher number of – CH₂ groups (1 carbon to 19 carbons).

Eg; Palmitic acid, Arachidonic acid.

Discussion

3519.	Enzymes capable of changing their form are calledA. ApoenzymeB. HoloenzymeC. IsoenzymeD. Allosteric enzymes
Answer» Correct Answer - D

Discussion

3520.	Decline in the activity of the enzyme hexokinase by glucose 6 - phosphate is caused byA. Non-competitiveB. Competitive inhibitionsC. Allosteric modulatorD. Denaturation of enzymes
Answer» Correct Answer - C (c) The substance which causes change in allosteric sites are known as modulators. They are of two types activator and inhibitor. Hexokinase is the exmple of inhibitor modulator.

Discussion

3521.	Enzymes as they exist inside the cell areA. In solid formB. In crystalline formC. In colloidal formD. In solution form
Answer» Correct Answer - C

Discussion

3522.	Which of the following describes the given grapgh correctly A. Exothermic reaction with energy A in absence of enzyme and B in presence of enzymeB. Endothermic reaction with energy A in presence of enzyme and B in absence of enzymeC. Exothermic reaction with energy A in presence of enzyme and B in absence of enzymeD. Endothermic reaction with energy A in absence of enzyme and B in presence of enzyme
Answer» Correct Answer - C

Discussion

3523.	During glycolysis enzyme hexokinase chages glucose to glucose-6- phosphate. Glucose-6-phosphate is inhibited byA. Feedback inhibitionB. Positive feedbackC. Competitive inhibitionD. Non-competitive inhibition
Answer» Correct Answer - A

Discussion

3524.	Assertion: Hydrolysis of sucrose brings about a change in sign of rotation from dextro to laevo. Reason: Hydrolysis always changes the optical rotation of a compound.A. If both assertion and reason are true and reason is the correct explanation of assertion.B. If both assertion and reason are true but reason is not the correct explanation of assertion.C. If assertion is true but reason is false.D. If both assertion and reason are false.
Answer» Correct Answer - C Sucrose is dextrotatory but after hydrolysis gives dextrorotatory glucose and laevorotatory fructose . Since laevorotation of fructose `(-92.4^(@))` is more than dextrorotatory of glucose `(+52.5^(@))` , hence the mixture is laevorotatory.

Discussion

3525.	Aspartame, an artificial sweetener, is peptide and has the following structure : .A. Identify the four functional groupsB.C.D.
Answer» Correct Answer - A::B::C::D `H_(2)N-underset(underset(underset("Aspartame(Aspartamine)")(CH_(2)-COOH))(\|))(CH)-CONH-overset(overset(CH_(2)-C_(6)H_(5))(\|))(CH)-COOCH_(3)` (i) in aspartame four functional groups are present which are (a) `-NH_(2)` (Amine) (b) `(-COOH)` (Carboxylic acid) (c) `-overset(overset(O)(\|\|))(C)-NH(2^(@)"amide")` (d) `-overset(overset(O)(\|\|))(C)-O-("Ester")` (ii) Zwutter ion structure is given as below : `H_(2)overset(+)(N)-underset(underset(CH_(2)-COO^(-))(\|))(CH)-CONH-overset(overset(CH_(2)C_(6)H_(5))(\|))(CH)-COOCH_(3)` (iii) `H_(2)N-underset(underset(CH_(2)COOH)(\|))(CH)-overset(overset(O)(\|\|))(C)-NH-overset(overset(CH_(2)C_(6)H_(5))(\|))(CH)-COOCH_(3) overset("Hydrolysis") (rarr)` `H_(2)N-underset(underset(underset((a))(CH_(2)COOH))(\|))(CH)-COOH + H_(2)N-underset((b))overset(overset(CH_(2)C_(6)H_(5))(\|))(CH)-COOH` Hence on hydrolysis two amino and (a) and (b) are obtained. (iv) In above to amino acids `NH_(2)- underset(underset(CH_(2)-H_(5)C_(6))(\|))(CH)-COOH` is more hydrophobic due to presence of non-polar `C_(6)H_(5)-CH_(2)-` or benzyl group.

Discussion

3526.	Arrange the following polymers in increasing order of their intermolecular forces : (i) Nylon 6, 6, Buna-S, Polythene. (ii) Nylon 6, Neoprene, Polyvinyl chloride.
Answer» Correct Answer - Elastomers or rubbers have the weakest intermolecular forces of attraction followed by plastics while fibres have the strongest forces of attraction. Thus, the increasing intermolecular forces of attraction follows the order. Elastomer `lt` Pastic `lt` Fibre, i.e., Buna-S, Polythene, Nylon 6,6.

Discussion

3527.	Write the names and the structures of monomers of following polymer : (i) Natural rubber (ii) Terylene.
Answer» Correct Answer - (i) Natural rubber : Isoprene `CH_(2)=overset(overset(CH_(3))(\|))(C)-CH-CH_(2)` (ii) (a) Terylene `: HO-CH_(2)-CH_(2)-OH` (Ethylen glycol) (b) Terphthalic acid.

Discussion

3528.	Match the vitamins given in Column I with the deficiency disease they cause given in Column II. `{:(Column I("Vitamins"),Column II("Diseases")),(A."Vitamin"A,1."Pernicious anaemia"),(B."Vitamin"B_(1),2."Increased blood clotting time"),(C."Vitamin"B_(12),3."Xerophthalmia"),(D."Vitamin"C,4."Rickets"),(E."Vitamin"D,5."Muscular weakness"),(F."Vitamin"E,6."Night blindness"),(G."Vitamin"K,7."Beri-beri"),(,8."Bleeding gums"),(,9."Osteomalacia"):}`
Answer» Correct Answer - A. `rarr(3,6)` B. `rarr(7)` C. `rarr(1)` D. `rarr(8)` E. `rarr(4,9)` F.`rarr(5)` G. `rarr(2)` `{:(Column I("Vitamins"),Column II("Diseases")),(A."Vitamin"A,"Xerophthalmia Night blindness"),(B."Vitamin"B_(1),"Beri beri"),(C."Vitamin"B_(12),"Pernicious anaemia"),(D."Vitamin"C,"Bleeding gums"),(E."Vitamin" D,"Rickets Osteomalacia"),(F."Vitamin"E,"Muscular weakness"),(G."Vitamin"K,"Increased blood clotting time"):}`

Discussion

3529.	Vegetable oils like wheat germ oil, sunflower oil etc. are the good source ofA. vitamin KB. vitamin EC. vitamin DD. vitamin A
Answer» Correct Answer - B Vitamin E is mainly present in vegetable oils like wheat germ oil , sunflower oil, etc.

Discussion

3530.	Biotin is an organic compound present in yeast. Its deficiency in diet causes dermatitis and paralysis. It is also known as:A. Vitamin `H`B. Vitamin `B_(1)`C. Vitamin `B_(12)`D. Vitamin `D`
Answer» Correct Answer - A

Discussion

3531.	Biotin is an organic compound present in yeast. Its deficiency in diet causes dermatitis and paralysis. It is also known as:A. vitamin AB. vitamin `V_(1)`C. Vitamin `B_(12)`D. vitamin D
Answer» Correct Answer - A

Discussion

3532.	Which of the following diseases is not correctly matched with the vitamins mentioned with it ?A. Vitamin `B_(2)`-Cracking of lipsB. Vitamin C-Bone deformitiesC. Vitamin D-OsteomalaciaD. Vitamin A-Night blindness
Answer» Correct Answer - B Deficiency of vitamin C causes scurvy or bleeding gums.

Discussion

3533.	Glucose when treated with `CH_3 OH` in the presence of dry HCl gives `alpha` and `beta`-methylglucosides because it containsA. An aldehydic groupB. a `CH_(2)OH` groupC. a ring structureD. five -OH groups.
Answer» Correct Answer - A In the structure of glucose the `C_(1)` carbon is chiral in hemiacetal form and exists in two stereoisomeric forms `alpha` and `beta` . These two of glucose give two methyl glycosides i.e., `alpha` and `beta`-methylglucosidic .

Discussion

3534.	The total number of optical isomers in open-chain aldohexose (such as glucose) isA. 8B. 8C. 16D. 2
Answer» Correct Answer - C

Discussion

3535.	RNA is genetic material in (A) bacteria (B) cyanobacteria (C) bacteriophages (D) plant viruses
Answer» The correct answer is (D) plant viruses

Discussion

3536.	The enzyme functions best at temperature (A) 30°C to 50°C (B) 15°C to 25°C (C) 20°C to 35°C (D) 40°C to 50°C
Answer» The correct answer is (C) 20°C to 35°C

Discussion

3537.	As temperature changes from 30° to 45° C, the rate of enzyme activity will(A) decrease (B) increase (C) first increase and then decrease (D) first decrease and then increase
Answer» The correct answer is (C) first increase and then decrease correct option is (c) first increase and then decrease

Discussion

3538.	Which of the following is an example of isozyme ?A. `alpha`-amylaseB. GlucokinaseC. Lactate dehydrogenasesD. All of these
Answer» Correct Answer - D The multiple molecular forms of an enzyme occuring in the same organism and having a similar substrate activity are called isoenymes or isozymes. They have similar properties but different molecular weights and locations. Over 100 enzymes are known to have isoenzymes. `alpha`-amylase of wheat endosperm has 16 isozymes, lactate dehydrogenase has 5 isozymes. Glucokinase is an isozyme of hexokinase.

Discussion

3539.	Read the following statements and find out the incorrect statement.A. Oils have lower melting point(e.g. gingely oil ) and hence remain as oil in winters.B. Adenosine, guanosine, cytosine,uridine and thymidine are nucleosides.C. Adenlylic acid ,thymidylic acid, guanylic acid, uridylic acid and cytidylic acid are nucleotides.D. Nucleic acids like DNA and RNA consists of nucleotides only.
Answer» Correct Answer - B (B) Oils have lowe melting point ( e.g., gingely oil) and hence remain as oil in winters. Adenosine, guanosine, cytidine, uridine and thymidine are nucleosides. Cytosine is a bae. Adenylic acid ,thymidylic acid, guanylic acid , uridylic acid, cytidylic acid and nucleotides. Nucleic acdis like DNA and RNA consists of nucleotides only.

Discussion

3540.	Holoenzyme is the complete enzyme consisting of an apoenzyme and a co-factor. Select the option that correctly identifies the nature of apoenzyme and co-factor.A. `{:("Apoenzyme","Co-factor"),("Protein" ,"Non-protein"):}`B. `{:("Apoenzyme","Co-factor"),("Non-protein" ,"Protein"):}`C. `{:("Apoenzyme","Co-factor"),("Protein" ,"Protein"):}`D. `{:("Apoenzyme","Co-factor"),("Non-protein" ,"Non-protein"):}`
Answer» Correct Answer - A Enzyme may be broadly classified into two types depending on their chemical composition-simple enzymes and conjugated enzymes are wholly made up of proteins and any additional substance or group is absent, e.g., pepsin, trypsin, etc. Conjugated enzymes (or holoenzymes) are formed of two parts -a protein part called apoenzyme and a non-protein part named co-factor. The complete conjugated enzyme consisting of an apoenzyme and a co-factor is called holoenzyme. Holoenzyme is the functional unit of enzyme. `underset(("Active enzyme"))("Holoenzyme")rarr underset(("Protein part"))("Apoenzyme")+underset(("Non-protein part"))("Co-factor")` Co-factor may be inorgainc or roganic in nature. Catalytic activity is lost when co-factor is removed from the enzyme which indicates that it plays a crucial role in catalytic activity of enzymes.

Discussion

3541.	What is enzyme specificity?
Answer» It is the property of an enzyme by which it will discriminate or select only a limited number of compounds for attack.

Discussion

3542.	Which part of enzyme in a holoenzyme (conjugated enzyme) determines specificity of enzyme ?A. AponezymeB. Prosthetic groupC. Metalo activatorD. None of these
Answer» Correct Answer - A

Discussion

3543.	The function of an enzyme is toA. cause chemical reactionB. change the rate of chemical reactionC. change the equailibrumD. change the directions of reactions
Answer» Correct Answer - B

Discussion

3544.	Which of the following is correct inan enzyme-conrtrolled reaction ?A. `E + S hArr E + P`B. `E+S hArr ES hArr EP hArr E +P`C. `E+S hArr ES hArr E`D. `E+S hArr P hArr E+P`
Answer» Correct Answer - B

Discussion

3545.	Enzyme haveA. same `pH` and tempeature optiamB. same ph but different temperature optimaC. different ph but same temperature optimaD. all wrong.
Answer» Correct Answer - D

Discussion

3546.	Human digestive system does not hydrolyseA. starchB. celluloseC. glycogenD. maltose
Answer» Correct Answer - B Human digestive system does not hydrolysis cellulose

Discussion

3547.	The enzyme which converts glucose into ethyl alchohol `(C_(2)H_(5)OH)` isA. DiastaseB. MaltaseC. ZymaseD. Invertase
Answer» Correct Answer - C (c) `C_(6)H_(12)O_(6)overset("Yeast")underset("Zymase")rarrC_(2)H_(5)OH+2CO_(2).`

Discussion

3548.	The enzyme which converts glucose into ethyl alchohol `(C_(2)H_(5)OH)` isA. invertaseB. zymaseC. emulsionD. lactase
Answer» Correct Answer - C The enzyme emulsion hydrolysis cellulose.

Discussion

3549.	Name the enzyme that catalyses maltose into glucose.
Answer» Correct Answer - Mallase

Discussion

3550.	Which enzyme converts urea into `CO_(2)` and `NH_(3)`?
Answer» Correct Answer - Urease

Discussion

Explore topic-wise InterviewSolutions in .

Which one of the following molecules will form zwitter ion?(a) CH3COOH (b) CH3CH2NH2 (c) CCl3NO2 (d) NH2CH2COOH

In double helix model of DNA, the number of hydrogen bonds formed between guanine and cytosine isA. TwoB. OneC. ThreeD. Four

Match the column I with column II and mark the appropraite choice. A. `(A) to (ii), (B) to (i), (C) to (iii), (D) to (iv)`B. `(A) to (iv), (B) to (i), (C) to (ii), (D) to (iii)`C. `(A) to (iii), (B) to (iv), (C) to (i), (D) to (ii)`D. `(A) to (i), (B) to (iii), (C) to (iv), (D) to (ii)`

Amino acids are produced fromA. nucleic acidB. carbohydratesC. fatsD. proteins

In metabolic press the maximum energy is given by :(a) carbohydrates (b) proteins (c) vitamins (d) fats

The double helix model of DNA was proposed byA. Har Gobind KhoranaB. Watson and CrickC. A.R. ToddD. G.W. kenner

In the preparation of glucose from cane sugar, alcoholic medium is necessary jtoA. get more yield of glucoseB. effect of separation of productC. act as catalystD. to make reaction faster

The enzymes which convert glucose into ethyl alcohol isA. zymaseB. InvertaseC. maltoseD. diastase

The enzymes which convert glucose into ethyl alcohol isA. DiataseB. InvertaseC. MaltaseD. Zymase

Ethanolic hydrochloric acid is added in the preparation of glucose from sucrose becauseA. hydrochloric acid provides acidic mediumB. glucose is insoluble in ethanolC. fructose is soluble in ethanolD. all of these

Give scientific reasons :In the preparation of glucose from sucrose, ethyl alcohol is added at the time of cooling.

Fill in the blanks : (ii)Many enzymes contain cetain ___ substances associated with them. There substances are called ____

Fill in the blanks : (iii)The fastest known enzyme is ____ found in red blood cells. It hydrates 36 millions molecules of `CO_2` to ___ and ___ in just a minute.

(a) which disaccharide is the major sugar of insect haemolymph. (b) Give atleast two examples of unsaturated fatty acids. ( c) Differentiate between saturated and unsaturated fatty acids (atleast 3 differences).

What are fatty acids? Give two examples.

Enzymes capable of changing their form are calledA. ApoenzymeB. HoloenzymeC. IsoenzymeD. Allosteric enzymes

Decline in the activity of the enzyme hexokinase by glucose 6 - phosphate is caused byA. Non-competitiveB. Competitive inhibitionsC. Allosteric modulatorD. Denaturation of enzymes

Enzymes as they exist inside the cell areA. In solid formB. In crystalline formC. In colloidal formD. In solution form

During glycolysis enzyme hexokinase chages glucose to glucose-6- phosphate. Glucose-6-phosphate is inhibited byA. Feedback inhibitionB. Positive feedbackC. Competitive inhibitionD. Non-competitive inhibition

Aspartame, an artificial sweetener, is peptide and has the following structure : .A. Identify the four functional groupsB.C.D.

Arrange the following polymers in increasing order of their intermolecular forces : (i) Nylon 6, 6, Buna-S, Polythene. (ii) Nylon 6, Neoprene, Polyvinyl chloride.

Write the names and the structures of monomers of following polymer : (i) Natural rubber (ii) Terylene.

Vegetable oils like wheat germ oil, sunflower oil etc. are the good source ofA. vitamin KB. vitamin EC. vitamin DD. vitamin A

Biotin is an organic compound present in yeast. Its deficiency in diet causes dermatitis and paralysis. It is also known as:A. Vitamin `H`B. Vitamin `B_(1)`C. Vitamin `B_(12)`D. Vitamin `D`

Biotin is an organic compound present in yeast. Its deficiency in diet causes dermatitis and paralysis. It is also known as:A. vitamin AB. vitamin `V_(1)`C. Vitamin `B_(12)`D. vitamin D

Which of the following diseases is not correctly matched with the vitamins mentioned with it ?A. Vitamin `B_(2)`-Cracking of lipsB. Vitamin C-Bone deformitiesC. Vitamin D-OsteomalaciaD. Vitamin A-Night blindness

Glucose when treated with `CH_3 OH` in the presence of dry HCl gives `alpha` and `beta`-methylglucosides because it containsA. An aldehydic groupB. a `CH_(2)OH` groupC. a ring structureD. five -OH groups.

The total number of optical isomers in open-chain aldohexose (such as glucose) isA. 8B. 8C. 16D. 2

RNA is genetic material in (A) bacteria (B) cyanobacteria (C) bacteriophages (D) plant viruses

The enzyme functions best at temperature (A) 30°C to 50°C (B) 15°C to 25°C (C) 20°C to 35°C (D) 40°C to 50°C

As temperature changes from 30° to 45° C, the rate of enzyme activity will(A) decrease (B) increase (C) first increase and then decrease (D) first decrease and then increase

Which of the following is an example of isozyme ?A. `alpha`-amylaseB. GlucokinaseC. Lactate dehydrogenasesD. All of these

What is enzyme specificity?

Which part of enzyme in a holoenzyme (conjugated enzyme) determines specificity of enzyme ?A. AponezymeB. Prosthetic groupC. Metalo activatorD. None of these

The function of an enzyme is toA. cause chemical reactionB. change the rate of chemical reactionC. change the equailibrumD. change the directions of reactions

Which of the following is correct inan enzyme-conrtrolled reaction ?A. `E + S hArr E + P`B. `E+S hArr ES hArr EP hArr E +P`C. `E+S hArr ES hArr E`D. `E+S hArr P hArr E+P`

Enzyme haveA. same `pH` and tempeature optiamB. same ph but different temperature optimaC. different ph but same temperature optimaD. all wrong.

Human digestive system does not hydrolyseA. starchB. celluloseC. glycogenD. maltose

The enzyme which converts glucose into ethyl alchohol `(C_(2)H_(5)OH)` isA. DiastaseB. MaltaseC. ZymaseD. Invertase

The enzyme which converts glucose into ethyl alchohol `(C_(2)H_(5)OH)` isA. invertaseB. zymaseC. emulsionD. lactase

Name the enzyme that catalyses maltose into glucose.

Which enzyme converts urea into `CO_(2)` and `NH_(3)`?

Fill in the blanks : (ii)Many enzymes contain cetain _ substances associated with them. There substances are called __

Fill in the blanks : (iii)The fastest known enzyme is ____ found in red blood cells. It hydrates 36 millions molecules of `CO_2` to _ and _ in just a minute.