Which of the following normally functions to lower the pH of the cytosol?

Question

Quizplus · Accepted Answer

The Na⁺-H⁺ exchanger and the Na⁺-driven Cl--HCO₃- exchanger in the plasma membrane help pump out protons from the cytosol (increase the cytosolic pH), and the latter exchanger also neutralizes cytosolic protons by bringing in bicarbonate ions. On the other hand, the Na⁺-independent Cl--HCO₃-exchanger, which is activated at high pH, helps lower the pH by transporting bicarbonate ions out of the cell down their electrochemical gradient.

Which of the Following Normally Functions to Lower the PH