And we reduced that ubiquinone into ubiquinol. Now, remember, back in our discussion on electron transport chain, we said that Ubiquinol basically carries the high energy electrons and the protons onto complex three of the electron transport chain. So if this is our electron transport chain, we have complex one, complex two, complex three, four, and complex five. This molecule here is this mitochondrial glycerol three phosphate dehydrogenase that we discussed in this diagram. And so, ultimately, the two electrons are passed onto this molecule and then the Ubiquinol takes those two electrons and becomes Ubiquinol and passes those two electrons directly onto complex three. And what that means is we essentially bypass complex one because when the NADH molecules are produced in a citric acid cycle, because the citric acid cycle takes place in the matrix of the mitochondria, these NADH molecules actually pass down their electrons onto complex one of the electron transport chain.