Two ATP molecules could provide energy for a sodium-potassium pump to move ____ ions out of the cell for every ____ ions it moves into the cell
a. 6 Na+; 3 K+
b. 2 Na+; 3 K+
c. 3 K+; 6 Na+
d. 3 K+; 2 Na+
e. 12 Na+; 6 K+
A
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