Enzymes - Comprehensive Mock Test 1

Question 1 Easy

Cofactor of the enzyme carboxypeptidase is

A) Biotin B) Zn²⁺ C) Mo D) Mn²⁺

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Question 2 Easy

In the ‘induced fit model’ of enzyme function

A) The structure of enzyme and substrate are complementary B) The enzyme undergoes conformation change C) The substrate undergoes conformation change D) There are no conformation changes

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Question 3 Easy

The enzyme-substrate interaction does not include

A) Hydrogen bonding B) Covalant bonding C) Electrostatic interactions D) Hydrophobic interactions

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Question 4 Medium

The specialized region on an enzyme that interacts with substrate is known as

A) Binding site B) Epitope C) Active site D) Paratope

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Question 5 Medium

The following is a competitive type of enzyme inhibitor

A) Acetazolamide B) Disulfiram C) Physostigmine D) Theophylline

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Question 6 Medium

Microsomal enzyme induction has one of the following features

A) Takes about one week to develop B) Results in increased affinity of the enzyme for the substrate C) It is irreversible D) Can be used to treat acute drug poisonings

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Question 7 Easy

Induction of drug metabolizing enzymes involves

A) A conformational change in the enzyme protein to favour binding of substrate molecules B) Expression of enzyme molecules on the surface of hepatocytes C) Enhanced transport of substrate molecules into hepatocytes D) Increased synthesis of enzyme protein

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Question 8 Medium

Which of the following types of drug metabolizing enzymes are inducible

A) Microsomal enzymes B) Nonmicrosomal enzymes C) Both microsomal and nonmicrosomal enzymes D) Mitochondrial enzymes

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Question 9 Medium

To prevent entry of food into the trachea the opening is guarded by ?

A) Epiglottis B) Hard palate C) Glottis D) Soft palate

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Question 10 Medium

Which enzyme is used in alcoholic fermentation of yeast?

A) Maltase B) Invertase C) Sucrase D) Zymase

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