Question

Blocking enzyme action through blocking its active sites is

• A. Non-competitive inhibition
• B. Competitive inhibition
• C. Feedback inhibition
• D. Allosteric inhibition

Answer 1

The correct option is B

Competitive inhibition

Blocking enzyme action through blocking its active sites is competitive inhibition.

This is brought about by a substance which closely resembles the structure of the substrate.

As both have similar structures, they compete to bind to the active site enzyme.

If the other substance succeeds, then it blocks enzyme activity.