AMP (cyclic AMP) activates glycogen phosphorylase by which mechanism?
A) It adenylates inactive phosphorylase converting it to an active form.
B) It allosterically activates the phosphorylase.
C) It allosterically inhibits phosphorylase phosphatase.
D) It allosterically activates an enzyme which initiates a series of reactions resulting in the activation of phosphorylase.
E) It phosphorylates an enzyme which initiates a series of reactions resulting in the activation of phosphorylase.
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