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MCAT Question A Day - 6/20/14

Aldosterone exerts its effects on target cells by:

A.  binding to a receptor at the cell surface, setting off a second-messenger cascade.
B.  diffusing into adrenal cortical cells. where it influences transcription of certain DNA sequences.
C.  flowing across the synapse, where it binds and initiates an action potential.
D.  entering into target cells, where it increases the rate of production of sodium-potassium pump proteins.

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