The operation of the sodium-potassium pump moves ________.
A) sodium and potassium ions into the cell
B) sodium and potassium ions out of the cell
C) sodium ions into the cell and potassium ions out of the cell
D) sodium ions out of the cell and potassium ions into the cell

Question

Quizplus · Accepted Answer

The sodium-potassium pump is an active transport mechanism that moves ions against their concentration gradients. It moves three sodium ions out of the cell and two potassium ions into the cell, resulting in a net exchange of one positive charge from the intracellular to the extracellular side of the membrane. Therefore, the correct answer is sodium ions out of the cell and potassium ions into the cell.

The Operation of the Sodium-Potassium Pump Moves ________