<prompt> Insulin causes intracellular shift of which of the following ion?NaKChlorideCalcium  <response>: Ans. B. KInsulin lowers serum K concentration i.e., causes hypokalemia.The hypokalemic action of insulin is due to stimulation of K intake by the cells mainly in muscle and adipose tissue.Insulin increases the activity of Na - K ATPase in cell membrane, so that more K is pumped into cells. 