So, as we now know, the matrix of the mitochondria is where we break down our fatty acids. We can oxidize the fatty acids into acetyl coenzyme molecules, and then we can use those molecules to basically generate ATP molecules via the citric acid cycle. Now, although the majority of the fatty acids are oxidized, are broken down, in the matrix of the mitochondria, there is another location of oxidation and fatty acids that occurs inside our cells, and this is inside proxy home. So remember that proxosomes are membrane bound organelles that also contain enzymes involved in the fatty acid oxidation process. Now, what types of fatty acids do we generally oxidize and break down in our peroxisomes? Well, it's the fatty acids that contain 20 or more carbon atoms.