To maintain a resting membrane potential, the sodium-potassium pump
A. actively transports 3 sodium ions out of the cell and 2 potassium ions into the cell.
B. passively transports 3 sodium ions out of the cell and 2 potassium ions into the cell.
C. actively transports 3 potassium ions out of the cell and 2 sodium ions into the cell.
D. passively transports 3 potassium ions out of the cell and 2 sodium ions into the cell.
A
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