But we can think of it as being one step in the sense that here we have two steps but here we have one step. So essentially this process is catalyzed by an enzyme known as lactate dehydrogenase. And again, just like this dehydrogenase and the dehydrogenase that was used in step six of glycolysis. This dehydrogenase, like any dehydrogenase, will essentially catalyze the movement, the transfer of a Hydride group from one molecule to another. In this case it's from this NADH onto this pyruvate molecule. And so ultimately what happens is the Hydride from this essentially goes on, attacks this carbon and then the H is picked up by the oxygen and so we form this lactate.