1 What is the approximate concentration of K* inside a typical cell (intracellular concentration)?

Answer 1

The typical intracellular concentration of potassium ions (K⁺) in a human cell is approximately 140 to 150 mM (millimolar). This concentration can vary somewhat depending on the type of cell and its physiological state, but this range is generally representative of the high intracellular potassium concentration found in many cell types.