Which statement describes the most common relationship of the inhibitor molecule to the allosteric enzyme in feedback inhibition of enzyme activity?
A) The inhibitor is the substrate of the enzyme.
B) The inhibitor is the final product of the metabolic pathway.
C) The inhibitor is the product of the enzyme-catalyzed reaction.
D) The inhibitor is a metabolically unrelated signal molecule.

Question

Quizplus · Accepted Answer

In feedback inhibition, the inhibitor is usually the final product of the metabolic pathway that the enzyme is involved in. As the concentration of the final product increases, it binds to the allosteric site of the enzyme, causing a conformational change that renders it inactive. This regulates the rate of the metabolic pathway and prevents an excessive buildup of the final product.

Which Statement Describes the Most Common Relationship of the Inhibitor