Question

exam lesson name: the human body
exam number: 700946rr
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question 5 of 20 :
select the best answer for the question.

1. which of the following describes the role of cyclic amp (camp) in hormone response?

○ a. camp are molecules that bind and captures the nonsteroid hormone.
○ b. camp opens a pore for steroid hormones to enter the nucleus.
○ c. camp receives messages from mrna to begin protein synthesis.
○ d. camp receives a message from a nonsteroid hormone and carries the message into the cell.

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Explanation:

To solve this, we analyze each option:

• Option A: cAMP does not bind to nonsteroid hormones; the hormone binds to a receptor, so A is incorrect.
• Option B: Steroid hormones can enter cells directly (they are lipid - soluble) and don't need cAMP to open a pore for them, so B is incorrect.
• Option C: cAMP is not involved in receiving messages from mRNA for protein synthesis. mRNA is involved in translation, and cAMP's role is in signal transduction for hormones, so C is incorrect.
• Option D: Nonsteroid hormones (water - soluble) bind to cell - surface receptors. This binding activates a G - protein, which then activates adenylate cyclase. Adenylate cyclase converts ATP to cAMP. cAMP then acts as a second messenger, carrying the hormonal signal into the cell to trigger a cellular response. So D correctly describes the role of cAMP.

Answer:

D. cAMP receives a message from a nonsteroid hormone and carries the message into the cell.