Which of the Following Happens in the Second-Messenger Step

question 118

Multiple Choice

Which of the following happens in the second-messenger step

• A)A small amount of one hormone (the second messenger) is required to release another.
• B)A tropic hormone (the first messenger) stimulates secretion of another hormone (the second messenger).
• C)The hormone first binds to a specific surface receptor, whereupon the hormone-receptor complex moves into the cell to combine with a specific intracellular receptor.
• D)A hormone (the first messenger) binds to surface receptors, activating adenylyl cyclase, which catalyzes cAMP formation.

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