Calcium pumps differ from sodium-potassium pumps in that they
A) do not require energy in order to operate.
B) are rarely found in the CNS.
C) do not collect another type of ion in exchange for the calcium they pump out of the cell.
D) are not essential for the healthy operation of the nervous system.

Question

Quizplus · Accepted Answer

Calcium pumps only move calcium out of the cell and do not exchange it for another ion, unlike sodium-potassium pumps which exchange sodium and potassium ions. Calcium pumps are also essential for the healthy operation of the nervous system and are found abundantly in the CNS. Furthermore, like all pumps, calcium pumps require energy to operate.

Calcium Pumps Differ from Sodium-Potassium Pumps in That They