 So another functional group is something called a phosphate group, and the phosphate group is complicated and the molecules can be very complicated, but you can see we have an oxygen and a PO3 group. We're going to look at something called a denising monofosphate here. We'll talk about this when we get to a later chapter, but for now I just want you to key in on our phosphate group, and you can see we have phosphorus in that. It has oxygens attached to it. So that is a denising monofosphate, which is an example of a phosphate group.