3. Which of the followings regarding cAMP is not True?
(A) An intracellular second messenger molecule
(B) To activate catabolite activator protein
(C) cAMP is low when glucose is the carbon source
(D) An important energy source in cells
(E) Involved in gene regulation in response to hormones and nutrients

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統計： A(0), B(1), C(0), D(0), E(0) #2801296