And so we see that in a single queue cycle, we actually generate two reduced cytochrome C molecules because of the fact that a single Ubiquinol can carry two electrons, but a single cytochrome C can only bind and carry a single electron. Now the other electron basically moves, attaches onto the heme groups of cytochrome B, and then that electron is picked up by the semiquinone radical ion and now gains two electrons. And then it takes two protons from the matrix of the mitochondria. It picks up those two protons to form Ubiquinol. And the Ubiquinol detaches from complex three and enters the inner membrane of the mitochondria, where now we can use this Ubiquinol that is formed to attach it onto this complex and use that Ubiquinol to basically generate those reduced cytochrome scene molecules. So the entire point of the second pathway here is to basically use or recycle those electrons so that we can actually use those electrons in a useful way so that we don't lose the electrons and we can recycle and reuse them in this pathway to actually generate that reduced cytochrome C. So in the second half cycle of the Q cycle, the second QH transfers a second pair of electrons through the same pathways as before, except now.