The sodium-potassium pump forces potassium ions ______ the cell and sodium ions ______ the cell
a. out of; out of
b. out of; into
c. into; out of
d. into; into
e. None of these. The ions merely leak down the channels.
C; The sodium-potassium pump uses ATP to power the exchange of sodium and potassium ions and move them against a concentration gradient. The sodium is pumped out, and the potassium is pumped in.
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