Assertion (A) In presence of enzyme, substrate molecule can be attacked by the reagent effectively.
Reason (R) Active sites of enzymes hold the substrate molecule in a suitable position.

Options

A. Assertion and reason both are correct statements and reason explains the assertion.
B. Both assertion and reason are wrong statements
C. Assertion is correct statement and reason is wrong statement.
D. Assertion is wrong statement and reason is correct statement.

Answer

A

Explanation

Assertion and reason both are correct and reason explains assertion. In presence of enzyme, substrate molecule can be attacked by a reagent effectively because active sites of enzymes hold the substrate molecule in a suitable position. So, enzyme catalysed reactions are stereospecific reactions.