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Biochemistry Enzymes Quiz

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Questions and Answers

What distinguishes enzymes from being consumed in biochemical reactions?

Enzymes require high concentrations to be effective.

Enzymes are always proteins.

Enzymes deactivate after a single reaction.

Enzymes remain unchanged by the end of the reaction. (correct)

Which statement correctly describes enzyme specificity?

Enzymes can function in both acidic and basic conditions without change.

Enzymes generally act on several unrelated substrates.

Enzymes have absolute specificity for a single substrate. (correct)

Enzymes can interact with a wide variety of substrates.

What is a holoenzyme composed of?

Apoenzyme and cofactor. (correct)

Protein only.

Substrate and product.

Catalyst and inhibitor.

What suffix is commonly used in the names of enzymes derived from their substrates?

-ase Signup and view all the answers

Which of the following is NOT a characteristic of enzymes?

They are consumed in the reaction. Signup and view all the answers

What model explains the mechanism by which substrates bind to enzymes allowing for a more effective reaction?

Induced fit model Signup and view all the answers

Which of the following components is NOT a type of cofactor that assists enzymes?

Substrates Signup and view all the answers

What role do enzymes play in relation to activation energy?

Enzymes decrease activation energy Signup and view all the answers

Which term describes the enzyme-substrate complex after the substrate has reacted but before it dissociates into product?

Enzyme-product complex Signup and view all the answers

What distinguishes metalloenzymes from metal-activated enzymes?

Metalloenzymes bind metal components tightly Signup and view all the answers