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In One Kind of Second-Messenger System

Question 70

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In one kind of second-messenger system


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) Releasing hormones (the first messenger) from the hypothalamus regulate many anterior pituitary hormones (the second messenger) .
E) A hormone (the first messenger) binds to surface receptors activating adenylate cyclase, catalyzing cAMP formation.

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