And because it contains a relatively large hydrophobic region, it can dissolve easily in the membrane. And so it can move across the membrane. And what it does is it takes those electrons from protein complex ones that were received by the NADH molecule, and it shuttles, it moves those electrons onto protein complex three. In addition, this coenzyme Q is also used to actually pick up the electrons received by protein complex one and move those electrons onto protein complex three. So let's move on to protein complex two. Now, the entire function of protein complex two is to actually accept and extract those hiding electrons from the fadh two molecules which are synthesized in the citric acid cycle.