[IB Biology at GHS: Reviews of Cell Biology]

11. In both cases, how are the K+ ions and Na+ ions moving across the membrane?

A) Both move from lower to higher concentration.

B) 3 Na + move out of the cell, 2 K+ move in.

C) Both move from higher to lower concentration.

D) 3 Na+ move into the cell while 2 K+ move out.

E) Both A & B are true for the sodium-potassium pump.

F) Both C & D are true for the sodium-potassium pump.

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