Enzymes - Mock Test 14

Question 131

Feedback inhibition of enzyme action is affected by?

A) Enzyme B) Substrate C) End products D) None of these

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Question 132

Who suggested that enzymes are proteinaceous?

A) Buchner B) Kuhne C) Sumner D) Pasteur

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Question 133

IUB had divided enzymes into how many classes?

A) 6 B) 5 C) 8 D) 4

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Question 134

Allosteric enzymes contain?

A) Multiple subunits B) Single chain C) Two chains D) Three chains

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Question 135

The active site of an enzyme is formed by a few of the enzymes?

A) R groups of the amino acids B) Amino groups of the amino acids C) Carboxyl group of the amino acids D) Exposed sulfur bonds

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Question 136

EEnzymes increases the rate of reactions by?

A) Increasing the free energy of activation B) Decreasing the energy of activation C) Changing the equilibrium constant of the reaction D) Increasing the free energy change of the reaction

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Question 137

The function of an enzyme is to?

A) Cause chemical reactions that would not otherwise take place B) Change the rates of chemical reactions C) Control the equilibrium points of reactions D) Change the directions of reactions

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Question 138

An enzyme catalyzes the conversion of an aldose sugar to a ketose sugar would be classified as one of the?

A) Transferases B) Isomerases C) Oxido reductases D) Hydrolases

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Question 139

An enzyme promotes a chemical reaction by?

A) Lowering the energy of activation B) Causing the release of heat which acts as a primer C) Increasing molecular motion D) Changing the free energy difference between substrate and product

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Question 140

An enzyme is a?

A) Carbohydrate B) Lipid C) Protein D) Nucleic acid

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