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 events occurs 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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