Question

Assertion: In presence of enzyme, substrate molecule can be attacked by the reagent effectively.

Reason: Active sites of enzymes hold the substrate molecule in a suitable position.

• A. Assertion is a correct statement and reason is a wrong statement.
• B. Both assertion and reason are wrong statements.
• C. Assertion and reason both are correct statements but reason does not explain assertion.
• D. Assertion and reason both are correct statements and reason explains the assertion.
• E. Assertion is wrong statement and reason is correct statement.

Answer 1

The correct option is D

Assertion and reason both are correct statements and reason explains the assertion.

Assertion

In the presence of enzymes, substrate molecules can be attacked by the reagent effectively, and the rate of the reaction generally increased.

So, the assertion is a correct statement

Reason

This is because active sites of enzymes hold the substrate molecule in a suitable position.

And due to this suitable orientation of substrate molecule it can react with the reagent effectively.

So, the reason is the correct statement and explains the assertion.

Hence, assertion and reason both are correct statements and reason explains the assertion.