Which of the following BEST describes a competitive inhibitor?

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Question

Which of the following BEST describes a competitive inhibitor?

Accepted Answer

C. It has a similar shape to the substrate and competes for the active site — A competitive inhibitor has a molecular shape similar to the substrate and competes with it for the active site. Its effect can be reduced by increasing substrate concentration. In contrast, a non-competitive inhibitor acts at the allosteric site.

Answer

A. It binds permanently to the active site and destroys the enzyme

Answer

B. It binds to the allosteric site and changes the active site shape

Answer

D. It increases the activation energy needed for the reaction

Answer

C. It has a similar shape to the substrate and competes for the active site

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