Given below are two statements: 

Assertion (A): Enzymes have active sites that hold substrate molecules for a chemical reaction.
Reason (R): Drugs Compete with the natural substrate by attaching covalently to the active site of the enzyme


 

1. Assertion and reason both are correct statements but reason does not explain assertion.
2. Assertion and reason both are correct and reason explains the assertion.
3. Both assertion and reason are wrong statements.
4. Assertion is the correct statement reason is the wrong statement.

Assertion is the correct statement reason is the wrong statement.
Correct reason: Drug compete with the natural substrate by attaching by weak bonds such as hydrogen bond, van der Waals', interaction and ionic bonding, etc., to the active site of the enzyme.