So we see that in a single Q cycle, two Ubiquinol molecules are oxidized into ubiquinole, releasing four H plus ions to the inter membrane space. Two are released in this first process, and two are released in the second process. At the same exact time, a single quinone, or ubiquinone, is reduced into ubiquinone. And that allows us to recycle these electrons. So this is the recycling step of this process. And we can imagine that this cytochrome B structure is actually a device that the complex uses to recycle those electrons so that we don't lose those electrons and we can reuse electrons to produce even more reduced cytochrome C molecules.