Zinc, an essential trace element for most organisms, binds near the active site of the enzyme carboxypeptidase and is necessary for the enzyme to function. The zinc most likely functions as a substrate for carboxypeptidase a coenzyme derived from a vitamin a cofactor necessary for enzyme activity a competitive inhibitor of the enzyme
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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) an allosteric activator of the enzyme C) a cofactor necessary for enzyme activity D) a coenzyme derived from a vitamin
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A metal ion required for enzyme activity is called a. cofactor b. a proenzyme c. a substrate d. a zymogen
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14. One of the enzymes involved in glycolysis, aldolase, requires Zn2+ for catalysis. Under conditions of zinc deficiency, when the enzyme may lack zinc, it would be referred to as the: A apoenzyme. B coenzyme. C holoenzyme. D prosthetic group. E substrate.
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