Activation of cAMP phosphodiesterase _________________________. Stimulates the phosphorylation of glycogen synthase Stimulates the phosphorylation of phosphorylase kinase Stimulates the phosphorylation of PFK-2 Stimulates the phosphorylation of glycogen synthase kinase 3 All of the above None of the above   Which of the following is likely to occur in type I diabetic patients? A decreased level of agouti-related peptide (AgRP) A decreased level of melanocortin Both A and B Neither A nor B

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