10) Which of the following coenzymes is required for the decarboxylation of pyruvate by the pyruvate dehydrogenase complex?(A) thiamine pyrophosphate (B) coenzyme A (C) lipoic acid (D) NAD+ (E) FAD

3) When glucagon binds to its receptor on a liver cell, which of the following sequence of eventsoccurs to activate protein kinase A?(A) activation of adenylate cyclase, activation of G protein, production of cAMP(B) activation of G protein, activation of adenylate cyclase, production of cAMP(C) activation of G protein, production of cAMP, activation of adenylate cyclase(D) production of cAMP, activation of adenylate cyclase, activation of G protein(E) none of the above

10) Which of the following coenzymes is required for the decarboxylation of pyruvate by the
pyruvate dehydrogenase complex?
(A) thiamine pyrophosphate

(B) coenzyme A

(C) lipoic acid

(D) NAD+

(E) FAD

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