In the process, we also extract we extract high energy electrons by the carrier NAD plus as well as Fads. Remember, Fad is flavin adenucleotide that is able to obtain two H atoms, while the NAD plus is a carrier nicotine amide adenine nucleotide that is able to obtain Hydride ions. So a single Hydride ion that contains two electrons on that H ion. So that's the difference between these two molecules. In step six, we use Fad. In step eight, we use NAD plus.