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AP Biology/Unit 4: Cell Communication and Cell Cycle
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Epinephrine Signal Transduction Pathway
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Which of the following describes the mechanism by which epinephrine initiates the signal transduction pathway for glycogen breakdown?

A

Binds to G protein-coupled receptors

B

Binds to intracellular receptors

C

Directly activates glycogen phosphorylase

D

Inhibits protein kinase A

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