Biology - Mock Test 122

Question 1211

Catalysts are different from enzymes in ?

A) functional at high temperature B) not used up in reaction C) being proteinaceous D) having high rate diffusion

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Question 1212

Enzymes are basically made up of ?

A) Fats B) Proteins C) Nucleic acids D) Vitamins

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Question 1213

Zymogen or proenzyme is a ?

A) Modulator B) Vitamin C) Enzyme precursor D) Hormone

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Question 1214

Enzyme complex involved in alcoholic fermentation is ?

A) Zymase B) Invertase C) Lipase D) Amylase

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Question 1215

Enzyme catalyzing rearrangement of atomic groupings without altering molecular weight or number of atoms is ?

A) ligase B) isomerase C) oxidoreductase D) hydrolase

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Question 1216

Diastase takes part in digestion of ______ ?

A) Protein B) Starch C) Amino acids D) Fat

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Question 1217

Blocking of enzyme action by blocking its active sites is ?

A) allosteric inhibition B) feedback inhibition C) competitive inhibition D) non-competitive inhibition

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Question 1218

An example of competitive inhibition of an enzyme is the inhibition of ?

A) succinic dehydrogenase by malonic acid B) cytochrome oxidase by cyanide C) hexokinase by glucose-6-phosphate D) carbonic anhydrase by carbon dioxide

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Question 1219

Which of the following is produced with the combination of apoenzyme and coenzyme?

A) Holoenzyme B) Enzyme substrate complex C) Prosthetic group D) Enzyme product complex

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Question 1220

An enzyme that joins the ends of two strands of nucleic acid is ?

A) polymerase B) ligase C) synthetase D) helicase

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