Question

The effect of a competitive inhibitor can be reversed by

• A. increasing the inhibitor concentration
• B. decreasing the substrate concentration
• C. increasing the substrate concentration
• D. the effect is irreversible

Answer 1

The correct option is C increasing the substrate concentration

When the inhibitor closely resembles the substrate in its molecular structure and inhibits the activity of the enzyme, it is known as competitive inhibitor. Due to its close structural similarity with the substrate, the inhibitor competes with the substrate for the substrate-binding site of the enzyme. But with the increase in substrate concentration, the effect of competitive inhibitor can be reversed.