A certain hormone activates the cAMP second messenger system in its target cells. Which of the following would yield the greatest response by a target cell?

Question

Quizplus · Accepted Answer

DApplying the hormone to the extracellular fluid allows it to bind to its receptor and initiate the cAMP second messenger pathway, leading to a cellular response. Injecting activated, cAMP-dependent protein kinase directly into the cytoplasm bypasses the earlier steps of the pathway, directly activating the processes downstream of cAMP production, thus also yielding a significant response.

A Certain Hormone Activates the CAMP Second Messenger System in Its