Glaser of phosphor lipids and single lipids are the main membrane lipids used in biological systems and the most common types of membrane lipids are foster the title ethanol, amine and phosphate title Coleene, which are both both types of blister of phosphor lipids and their structures can be seen here in these images below. And it's worth noting that precarious actually can't synthesize fossil title Colleen and actually use a different membrane lipid, which is obviously important for the pharmaceutical industry and for drug targets. Now, let's just talk a little bit about the structure of thes glycerol Oh, fossil lipids. And let's take a look at phosphate title. Colin, Right here. You see that it similar to try slug Lyssarides. It has a glycerol backbone right there. So that's yes, Blitzer all and attached to the glycerol are too fatty acids. You have one here and one here. And also attached to the glycerol is a phosphate group right there that is a phosphate. And in the case of phosphate title coleene, we have a coleene attached to the phosphate. So that is Kohli in right there, uh, for foster title, eh? Thin ola mean we have a different molecule attached to the phosphate group. But the same the same backbone as foster title Coleene, Just a different molecule in the place of Coleene. And we also have in this image phosphate title, searing and, uh, foster title and no settle, which are also important membrane lipids, but not the major ones. Now, Swingle lipids are a little different than these glycerol phosphor lipids. And the reason for that is in their structure. And you can see here we have two single lipids on the right hand side of the page. And let's take a look at what? At this swingle. If it right here. So you might notice that its structure is in some ways similar to phosphate title. Colin. Right? We've got the coleene, the phosphate group, and in this case, on lee one fatty acid fatty acid right there instead of glycerol in another fatty acid. We actually have this other molecule in a circle. It read. We have this molecule here and this molecule is called en Came out looking weird there. Mhm work. Yeah, Start over. This is Spink. A scene right here. So overall, Very similar looking structure right. However little subtle differences that actually give it different properties and therefore it's used for different purposes. Onda Again, this particular molecule is spend a million. But all single lipids use this finger zine backbone, and that is sort of the basic difference in structures. Whether you have to fatty acids and glycerol backbone or using a finger seen backbone and Onley have one fatty acid. That's sort of the basic separation between single lipids and glycerol phosphor lipids. All right with that, let's actually turn the page.