Zinc,an essential trace element for most organisms,is required in the active site of the enzyme carboxypeptidase in order for the enzyme to function properly.The zinc most likely functions as a(n)
A)competitive inhibitor of the enzyme.
B)noncompetitive inhibitor of the enzyme.
C)allosteric activator of the enzyme.
D)cofactor necessary for enzyme activity.
E)coenzyme derived from a vitamin.

Question

Quizplus · Accepted Answer

Zinc is serving here as a cofactor, which is a non-protein chemical compound required for enzyme activity. Without zinc, the enzyme carboxypeptidase won't function properly. Therefore, zinc is necessary for enzyme activity.

Zinc,an Essential Trace Element for Most Organisms,is Required in the Active