The second- messenger mechanism of hormone action operates by .
A)binding to specific receptors and employing the services of G proteins and cAMP
B)increasing the basal metabolic rate in the target organ
C)synthesizing more of the hormone than is actually needed
D)not responding to a feedback mechanism

Question

Quizplus · Accepted Answer

The second-messenger mechanism of hormone action involves the hormone binding to specific receptors on the target cell membrane. This activates G-proteins, which activates adenylate cyclase, ultimately leading to the production of cyclic AMP (cAMP). cAMP then activates protein kinase A, which phosphorylates other proteins to elicit a cellular response. This mechanism allows for amplification of the hormonal signal and a rapid response from the target cells.

The Second- Messenger Mechanism of Hormone Action Operates by