And that electric current can be used to power some type of process. And in this particular case, the process that we power is the pumping of H plus ions. So what we want to do is we want to establish a proton electrochemical gradient that will ultimately be used by ATP synthase to form ATP molecules. And so protein complex one is actually a proton pump. And as these electrons move and ultimately end up on Ubiquinone, as we'll see in just a moment four H plus ions are actually pumped by protein complex one from the matrix side through the intermembering space of the mitochondrion. Now, as these electrons move, they ultimately end up on a carrier molecule known as coenzyme Q, or Ubiquinone.