Many cells have a sodium-potassium pump. In order to function, sodium-potassium pumps require
A) ATP.
B) a channel protein.
C) no concentration gradient.
D) ADP.
E) All of the above

Question

Quizplus · Accepted Answer

Sodium-potassium pumps require ATP to function. ATP provides the energy necessary for the pump to move sodium ions out of the cell and potassium ions into the cell, against their concentration gradients. A channel protein and no concentration gradient are not required for the function of the pump, and ADP cannot provide the necessary energy for the pump.

Many Cells Have a Sodium-Potassium Pump