To actually generate those ATP molecules, and recall from the previous discussion, four protons are needed to actually generate a single ATP molecule. And so we see that we have a total of ten H plus ions pumped into the intermembrane space by this NADH produced in a citric acid cycle. We need four H plus ions to generate a single ATP molecule. And so we divide these numbers. We get a value of 2.5 of ATP molecules are generated when a single NADH produced by the citric acid cycle is oxidized into NAD plus by the electron transport chain. Now let's carry out the same calculation, except now we do it for the NADH produced by glycolytic pathway, which takes place in a cytoplasm, because NADH actually passes down the electrons to the DHAP to form the g three P. And then the g three p goes into the inner membrane of the mitochondria, binds up to this enzyme here.