We have phosphoglycerides and we also have spingolipids. Now in, in this lecture we're going to focus on glycolipids and cholesterol molecules. So let's begin with glycolipids. What exactly are glycolipids? Well, Glycolipids are biological molecules that contain a lipid molecule attached via glycosetic bond to a sugar moiety. And that sugar moie can be a single sugar or it can be some type of polysaccharide many sugars.