Function of CAMP: (A) Ion exchange, (B) Activation of protein kinase, (C) Activation of Ryanodine receptors, (D) Release of acetylcholine
Answer is B. CAMP is a secondary messager, used for intracellular signal transduction, such as transferring into cells the effect of hormones like glucagon etc.it is involved in activation of protein kinase Ref:Guyton and Hall textbook of medical physiology 12th edition,page number 540 ,541,542