Ion transporters are linked togethernot physically, but as a consequence of their

Chapter 0, Problem 11-6

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Ion transporters are linked togethernot physically, but as a consequence of their actions. For example, cells can raise their intracellular pH, when it becomes too acidic, by exchanging external Na+ for internal H+, using a Na+H+ antiporter. The change in internal Na+ is then redressed using the Na+-K+ pump. A. Can these two transporters, operating together, normalize both the H+ and the Na+ concentrations inside the cell? B. Does the linked action of these two pumps cause imbalances in either the K+ concentration or the membrane potential? Why or why not?

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