Movement of K⁺ into the cell requires energy expenditure, whereas movement of Na⁺ into the cell does not.

Question

Quizplus · Accepted Answer

Movement of K⁺ against its concentration gradient and towards the inside of the cell requires energy expenditure in the form of ATP hydrolysis or coupling with other favorable processes, such as the movement of an ion down its electrochemical gradient. In contrast, movement of Na⁺ into the cell is usually driven by its electrochemical gradient and does not require additional energy expenditure.

Movement of K⁺ into the Cell Requires Energy Expenditure, Whereas