In this case, we show the peripheral protein binding to our phospholipid bilayer. And because these proteins do not actually span the entire bilayer, that means they usually do not act as transport proteins. These proteins do not span the entire membrane and function in adhesion or cell recognition, cell signaling or cell communication. Now, both types of proteins, integral as well as peripheral, can have sugar or carbohydrate components which protrude outside the cell. Remember, sugars are polar, and our cytosol, as well as the extracellular fluid is, in fact, polar. So these sugar components will basically attach themselves to our integral proteins or peripheral proteins and will point directly outward, as shown.