So palmitic acid and oleic acid generally, they generally range from 14 to 24 carbons in length. Now, in all animals, including our own cells, these fatty acid hydrocarbon chains are not branched. They do not have any branching points, as shown in this particular diagram. So in animals, these hydrocarbon chains and fatty acids never actually branch. Now, the second point of difference between two or more fatty acids is the number of double bonds. And in this particular case, we have no double bonds.