Physiology The electrogenic Na+ K+ ATPase plays a critical role in cellular physiology by A Extruding 3 Na+ out of the cell in exchange for taking two K+ into the cell. B Extruding 3 K+ out of the cell in exchange for taking two Na+ into the cell. C Using the energy in moving Na+ into the cell or K+ outside the cell to make ATP. D Using the energy in moving Na+ outside of the cell or K+ inside the cell to make ATP. 💡 Explanation The electrogenic Na+ K+ ATPase plays a critical role in cellular physiology by ✓ Correct Answer: A. Extruding 3 Na+ out of the cell in exchange for taking two K+ into the cell.