Which of the following is true of the sodium-potassium exchange pump?
A) It maintains sodium at equal intracellular and extracellular levels.
B) It is a passive transport process.
C) It moves sodium into the cell and potassium out of the cell.
D) There is one type of carrier protein for sodium and a different type of carrier protein for potassium.
E) It is an example of active transport.

Question

Quizplus · Accepted Answer

The sodium-potassium exchange pump is an example of active transport, as it requires ATP to pump three sodium ions out of the cell and two potassium ions into the cell. This process helps maintain the concentration gradients of sodium and potassium, with higher concentrations of potassium inside the cell and higher concentrations of sodium outside the cell.

Which of the Following Is True of the Sodium-Potassium Exchange