1.

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

Answer»

Both A and R are CORRECT and R explains A.
Both A and R are correct but R does not explain A.
A is correct but R is wrong.
A is wrong but R is correct.

Answer :C


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