Question

Which of the following statements is INCORRECT?

Options

• The potential difference across the cell membrane is because of the difference in the concentrations of K⁺ and Na⁺ across the cell membrane.

• NaCl is the source of gastric acid.

• Na⁺ ion is major cation inside the cell within cell fluid.

• Both Na⁺ and K⁺ control muscle contraction.

Answer 1

Na⁺ ion is major cation inside the cell within cell fluid.

Explanation:

Na⁺ ions are primarily found in blood plasma and interstitial fluid, whereas the K⁺ ion is the most abundant cation within the cell fluid.