Which of the following is (are) associated with cAMP binding to cAMP-dependent protein kinase A?
I. cAMP binds to the regulatory subunits.
II. Tetrameric regulatory subunits and catalytic subunits dissociate.
III. Catalytic subunits phosphorylate multiple targets with specific serine and threonine residues.
IV. cAMP is membrane bound via phosphoinositol attachment.
A) I, II, III, IV
B) I, II, III
C) I, II
D) II, III, IV
E) III, IV
Answer: B) I, II, III
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