The fadh two remains bound onto the complex, and then it basically is oxidized back into fad. It basically kicks off those two H ions. Those two h. Yeah, the two H ions, as well as those two electrons. And those two electrons then travel through a series of these iron sulfur clusters and ultimately end up being bound onto that coenzyme cue the Ubiquinone. When the Ubiquinone uptakes those two H ions, it then forms Ubiquinol, which detaches and moves on to complex three, as we'll see in the next lecture. And again, a very important distinction between complex one and complex two is the fact that complex one actually pumps those protons and helps generate that electrochemical gradient for hydrogen ions.