Zinc, an Essential Trace Element for Most Organisms, Is Present

question 10

Multiple Choice

Zinc, an essential trace element for most organisms, is present in the active site of the enzyme carboxypeptidase. The zinc most likely functions as

• A) a noncompetitive inhibitor of the enzyme.
• B) a cofactor necessary for enzyme activity.
• C) a competitive inhibitor of the enzyme.
• D) a coenzyme derived from a vitamin.
• E) an allosteric activator of the enzyme.

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Definitions:

Insulin

A hormone produced by the pancreas that regulates the amount of glucose in the blood and aids in metabolism.

Anorexia Nervosa

A psychological and potentially life-threatening eating disorder characterized by extremely low body weight, a distorted body image, and an intense fear of gaining weight.

Restricting Type

A classification that describes a specific approach or feature within a broader category, often used in the context of dietary disorders where the individual limits intake.

Diabetes Insipidus

A rare condition characterized by intense thirst and the excretion of large amounts of dilute urine, unrelated to diabetes mellitus.