40. Which of the following descriptions about second messe ssengers is/are CORRECT?
(A) Activation of G-protein coupled receptors results in the production of eyelic GMP
(B) Diacyl glycerol and phosphatidylinositol 4,5-bisphosphate are catalytic products of inositol 1,4,5-triphosphate
(C) AdenylyI cyclase produces cyclic AMP from ATP
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