<prompt> All are second messengers except:Cyclic AMPGuanylyl cyclaseDiacylglycerolInositol triphosphate  <response>: Remember that guanylyl cyclase is an enzyme while cGMP is a secondary messengerTypes of second messengersThere are 3 basic types of secondary messenger molecules:1. HydrophobicDAGIP3Phosphotidylinositol2. HydrophiliccAMPcGMP3. GasesNOCO 