And so now two protons are pumped here, four protons are pumped here. So we form a net result of six protons in this case as compared to the ten protons in the previous case. And so now six H plus ions divided by we still need four H plus to generate a single ATP. We form 1.5 ATP per single NADH that is, oxidized that is produced in the glycolytic pathway. So from this result, we can conclude the following. Since the mitochondrial membrane is impermeable to NADH, the solution to actually transporting the NADH is not actually moving the NADH, but rather transporting those electrons onto a different molecule, then moving that molecule across the outer membrane and using that molecule to move the electrons onto this enzyme, which then moves those electrons onto Ubiquinone.