Answer;
-Sodium; potassium
In order to maintain cellular homeostasis, one abundant type of exchange pump ejects sodium ions from the cell and imports potassium ions.
Explanation;
-The process of moving sodium and potassium ions across the cell membrance is an active transport process involving the hydrolysis of ATP to provide the necessary energy.
-It involves an enzyme referred to as Na+/K+-ATPase. This process is responsible for maintaining the large excess of Na+ outside the cell and the large excess of K+ ions on the inside.