What is the net charge movement across the membrane during Na/K-ATPase activity?

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Multiple Choice

What is the net charge movement across the membrane during Na/K-ATPase activity?

Explanation:
The Na+/K+-ATPase moves 3 Na+ out and 2 K+ in for each cycle, using one ATP. This creates a net loss of one positive charge from inside to outside, so there is a net outward movement of positive charge. This electrogenic action helps maintain a negative resting membrane potential. Therefore, the net charge movement is outward of positive charge, not into the cell and not zero.

The Na+/K+-ATPase moves 3 Na+ out and 2 K+ in for each cycle, using one ATP. This creates a net loss of one positive charge from inside to outside, so there is a net outward movement of positive charge. This electrogenic action helps maintain a negative resting membrane potential. Therefore, the net charge movement is outward of positive charge, not into the cell and not zero.

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