And now we can transport the fatty acid into the mitochondrial matrix using a special transport mechanism that involves a molecule known as carnitine. So carnitine is the molecule that helps transport our acyl coenzyme A that contains the fatty acid into the mitochondrial matrix. Now, once the fatty acid, specifically once inside the acyl coenzyme A is inside the mitochondrial matrix, the ACL coenzyme A molecule is shortened by two carbons via a series of four reactions that are known as beta oxidation because the cutting takes place on the beta carbon. So each time our acyl coenzyme A is shortened by two carbons, we basically produce a single NADH molecule, a single fadh two molecule, as well as an acetylco or an acetyl coenzyme A. So remember, an acyl coenzyme A and an acetyl coenzyme A are two different molecules. So we take the acyl coenzyme A, it undergoes beta oxidation in the matrix to produce our acetyl coenzyme A.