<prompt> All known effects of cyclic AMP eukaryotic cells results fromActivation of catalytic unit of adenylate cyclaseActivation of SynthestaseActivation of protein kinasePhosphorylation of G protein  <response>: Cyclic AMP exces most 9f its evgect by stimulating cAMP dependent protein kinase.these phosphorylation enzyme results in their activation or inhibitions Ref-KDT 7e p46 