And that means it does not actually pump any H ions into the intermembrane space. Now, the entire purpose of creating this electrochemical gradient is to basically create a high concentration of our H plus ions as well as a high amount of charge in the intermembrane space. And that allows these H plus ions to move down their electrochemical gradient from a region of high concentration to low concentration from a region of high charge to low charge through these channels in our ATP synthase. And when these H ions move, we synthesize ATP molecules. So for one NADH coming from the citric acid cycle or Pyruvate decarboxylation, we form three ATP molecules. But for our NADH coming from glycolysis, we only synthesize two.