Now, this is the activated Acyl unit. And if this molecule has a fully saturated hydrocarbon chain and it contains an even number of carbon atoms, then this process can basically take place again and again and again until we break down that absolute unit into these acetyl units. So if the fatty acid that were breaking down is fully saturated and it contains an even number of carbon atoms, then this process can cycle over and over and over until we completely break down that fatty acid into these acetyl units. Now, once we form the acetyl units, they can then enter the citric acid cycle, and that can ultimately be used to generate high energy ATP molecules. So, once again, to summarize, the breakdown of fatty acids is an oxidative process that releases activated acetyl coenzyme A units, thereby shortening or decreasing the size of that hydrocarbon chain by two carbons. And once we form the activated Coenzyme A units, they can enter the citric acid cycle, where they're ultimately used to actually generate the high energy ATP molecules.