Which ion has the greatest concentration in the cytoplasm
A)calcium ion
B)chloride ion
C)phosphate ion
D)potassium ion

Question

Quizplus · Accepted Answer

Potassium ion (K+) has the greatest concentration in the cytoplasm, ranging from 140-150 mM. This high concentration of K+ is maintained by the sodium-potassium ATPase pump, which actively pumps K+ into the cell and Na+ out of the cell. The other ions listed (calcium, chloride, and phosphate) have lower concentrations in the cytoplasm compared to potassium.

Which Ion Has the Greatest Concentration in the Cytoplasm