Answer discussion questions 2-3 peer reviewed references with citations at least one for eachquestion. Each question should be answered with a 250 word minimum.

1.Provide and discuss examples of cell receptors that regulate epinephrine and acetylcholine.Discuss the role of cytokines in cell signaling pathways.

2.Discuss the role of ligands in cell signaling anddiscuss the role that insulin plays in bio-signaling. Where does insulin bind on the insulinreceptor?