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. At the end, we form a Ubiquinol because that semiquinol radical ion that is formed in the first half cycle picks up a second electron, is able to abstract two protons from the matrix of the mitochondria and form regenerate that Ubiquinol molecule. And that ubiquinol can then be used by this pathway here to basically generate the reduced cytochrome C. So we conclude the following four important points, and I've only listed three. So the first important point is the following.