So let's begin by examining the following diagram. So, in this diagram, we have the inner membrane of the mitochondria and we have the matrix side of the mitochondria. So this is essentially the cytoplasmic side. Now, in step one, we basically want to transform the NADH molecule that is produced in a glycolytic pathway into NAD plus. And in this process, we ultimately extract those two high energy electrons and we place them onto oxyloacetate. In the process, we actually reduce oxyloacetate into malate.