And carbohydrates consist entirely of carbon, of oxygen and of hydrogen. Now, carbohydrates basically exist in their polymer form when we actually ingest them in our food products. So what that basically means is carbohydrates exist of these connecting units we call monomers or monosaccharides. And before our body, our cells actually absorb these carbohydrates into the cells, we have to break down those carbohydrates, the polysaccharides, into their individual form, into their monosaccharides. And the way that our body breaks down these polysaccharides, these long chain carbohydrates, is by using specialized types of proteolytic enzymes that we're going to focus on in the next several lectures. Now, the process that these enzymes use is known as hydrolysis.