(C) A cell in the kidney works constantly to keep the ion balance in the blood correct. The cell membrane contains ion pumps and channels that move Naions across the membrane. Looking specifically at...

(C) A cell in the kidney works constantly to keep the ion balance in the blood correct. The cell membrane contains ion pumps and channels that move Naions across the membrane. Looking specifically at one type of pump, Na+ ions are transported from the inside of the cell to the outside of the cell. Assume that the cell does not generate or consume Na+ ions. You are interested in writing a model on the positive charge contributed by Na+ ions as they move across the cell membrane through the pumps.