<prompt> Which of the following is the most impoant effector pathway for action of Nitric Oxide:Adenylate cyclase pathwayPhosphatidylinositol pathwayGuanylate cyclase pathwayMAP Kinase pathway  <response>: The most impoant effector pathway for NO is activation of the soluble form of guanylyl cyclase. Soluble guanylate cyclase sGC catalyses the conversion of guanosine 5;-triphosphate GTP to cyclic guanosine 3;5;-monophosphate cGMP Ref: Harper 