Question

Assertion: Allosteric enzymes show feedback inhibition.
Reason: The inhibitor is competitive.

• A. Both A and R are true and R is the correct Explanation for A.
• B. Both A and R are true, but R is not the correct explanation for A.
• C. A is true and R is false.
• D. A is false and R is true.

Answer 1

The correct option is C

A is true and R is false.

Option C.

Assertion statement:

1. Feedback inhibition is a cellular control mechanism in which the end product of an enzyme inhibits its activity.
2. The accumulation of end products results in the binding of the end products to the allosteric site of the enzyme, controlling or stopping the rate of the reaction.

Reason statement:

1. The allosteric binding site is distinct from the catalytic site of the enzyme.
2. The end products do not compete with an enzyme's active site for binding; instead, it slowly binds to the enzyme's allosteric site and regulates its activity.

Final answer:

The assertion is true and the reason is false.