So, amino acids, fats, the glycerol molecules, as well as the lactate and pyruvate molecules. So now let's take a look at gluco neogenesis. So I said earlier that gluconeogenesis is essentially the process by which we transform the pyruvate molecules into glucose. And remember that glycolysis transforms glucose into Pyruvate. So at first it might seem like gluconeogenesis is simply the reverse of glycolysis. Now, that's not actually true, and gluconeogenesis is not simply the reverse of glycolysis.