Epinephrine binds to receptor sites on the cell membrane, and this binding sets

Question

Epinephrine binds to receptor sites on the cell membrane, and this binding sets off a series of events that cause the cell to transcribe certain gene sequences. Which of the following are true of this system?

(Check all that may apply.)

a. Epinephrine is probably a peptide hormone.

b. Epinephrine binding results in the release of second messenger that causes mRNA to be produced.

c. Epinephrine is probably a steroid hormone.

d. The binding sites on the cell membrane are probably proteins or glycoproteins.

e. Epinephrine eventually enters the cell.

Explanation / Answer

Epinephrine binds to receptor sites on the cell membrane, and this binding sets

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