Which of the following statements best describes the role of adenylyl cyclase in the epinephrine signaling pathway? Group of answer choices

It converts a polymer to its monomer subunits.

It moves substances across the plasma membrane.

It accelerates the production of a second messenger.

It transfers phosphate groups from to protein substrates.

It accelerates the production of a second messenger.

Explanation:

Adenylyl cyclase is an enzyme capable of converting ATP molecules into cyclic adenosine monophosphate AMP (cAMP). The cAMP molecule is considered to be a second messenger that transfers the hormonal signal (i.e., epinephrine) inside the cell. Subsequently, cAMP activates molecular signaling events by binding and thus activating cAMP-dependent protein kinase A (PKA). Finally, this last protein (PKA) phosphorylates different proteins that control many diverse cellular processes.

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