Question

Sodium ions are found mainly in the extracellular fluid while most ___________ ions are found in the intracellular fluid.
a. iron
b. chloride
c. potassium
d. bicarbonate
e. plasma protein

Answer 1

Answer:

The correct option is: c. potassium    

Explanation:

In multicellular organisms, the extracellular fluid refers to the fluid which is present outside the cells of the body. The extracellular fluid mainly contains the sodium ions, bicarbonate ions and the chloride ions.

In multicellular organisms, the intracellular fluid is the fluid present inside the cells of the body. This intracellular fluid has high concentration of magnesium, phosphate and potassium ions.