The human hormone estrogen is highly nonpolar. After being secreted, estrogen will be found

A. at high concentrations just in the cells that express a membrane-bound receptor.
B. trapped in endocytic vesicles in cells that express a membrane-bound receptor.
C. in the lysosome of all cells of the body.
D. at low concentrations in all cells of the body.


Answer: D

Anatomy & Physiology

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