The Principal Cation in Cytoplasm Is

Question

The principal cation in cytoplasm is
A)sodium.
B)potassium.
C)calcium.
D)magnesium.
E)chloride.

Accepted Answer

Potassium is the principal cation in cytoplasm, and is important for maintaining cell function and communication. Sodium and chloride are also present in cytoplasm, but in lower concentrations than potassium. Calcium and magnesium are divalent ions and are usually found in extracellular fluid or stored in organelles.