AIIMS2014Zoology-Enzyme Activity

AIIMS 2014 Zoology Enzyme Activity MCQ Question

Type: MCQ-conceptual-Medium-Class 11

Assertion Enzymes become inactive below minimum temperature. Reason The inactivity of the enzymes is due to denaturation.

A

Both Assertion and Reason are true and Reason is the correct explanation of Assertion

B

Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion

C

Assertion is true but Reason is false

D

Both Assertion and Reason are false

Correct Answer

Option A

Detailed Explanation

The assertion is true because enzymes typically have a minimum temperature below which their activity significantly decreases, leading to inactivity. However, the reason is false; enzyme inactivity at low temperatures is not due to denaturation, which generally occurs at high temperatures, but rather due to reduced kinetic energy and molecular motion that slows down enzyme-substrate interactions. Therefore, the correct answer is C: Assertion is true but Reason is false.

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