Which of the following statements correctly describes hormones?
A)They are all of similar chemical composition.
B)They combine with specific receptors on the target cell's surface or inside the target cell.
C) They are secreted at a constant rate.
D) They all act by activating adenylate cyclase, which transforms ATP into cyclic AMP.

Question

Quizplus · Accepted Answer

Hormones are chemical messengers secreted by endocrine glands that travel through the bloodstream to target cells where they bind to specific receptors on the cell surface or inside the cell to initiate various physiological responses. Hormones can have different chemical compositions and can be secreted at varying rates. Not all hormones act by activating adenylate cyclase, and this is not a defining characteristic of hormones.

Which of the Following Statements Correctly Describes Hormones