So remember, cholesterol molecules are steroid molecules. They contain four fused chains or four fused rings, as shown in the following diagram. So these are phospholipid molecules. These are glycophosolipids that contain these sugar components. These are cholesterol molecules, and this is some type of transmembrane integral protein. Now, when cholesterol fits into the structure of the membrane, it actually interferes with the structure of these fatty acids because of the difference in shape.