In the epinephrine pathway in liver and skeletal muscle, caf…

In the epinephrine pathway in liver and skeletal muscle, caffeine from coffee and other sources is known to inhibit the phosphodiesterase that cuts cAMP to AMP.  This enzyme is known to maintain a stable activity during high and low epinephrine conditions. A) Under conditions of high [epinephrine] and the absence of caffeine,  list the cellular response. (This is the response at the end of the signaling pathway) B) Under conditions of high [epinephrine] and high [caffeine],  give a molecular description for how caffeine may affect steps in the signaling pathway. including the cellular response.