And the other remaining h ion no longer contains electrons. So it's simply H ion, and we form the H plus as well as the fad. Now, this step is interesting because it's unlike other steps that take place inside our body, because usually it's the NAD that is used to transfer electrons onto the Sad, but in this case, it's in reverse. And the reason is because the fad is actually activated by attaching itself onto the enzyme. And because of that activity, because of being activated in that form, it actually does the opposite. In this case, it is used to actually give those electrons onto the NAD, as well as that h that carries those electrons to form the reduced nicotine mi adenine dinucleotide molecule that will be used by the electron transport chain to actually generate those ATP molecules.