 We're going to talk about our four different kinds of biomolecules and I'm going to see if this works out for me to have one page where we keep track of all the little bits and pieces of information about each one of them. I'd love to have one I Don't know one chart that includes all the information. We'll see if I can make it fit for categories of biomolecules, carbohydrates and I mean right there. I already am I don't know. I may have to do some adjustments to make sure I can fit everything on here Let's look at for all of them will do this, but I want to look at the subunit. All All biomolecules are made up of building blocks like they all have a thing that if you string a whole bunch of that thing together You get the biomolecule and you can get great complexity because you can mix and match how you put those things together Okay, I don't know if that makes any sense at all, but carbohydrates all of them This is wild. All carbohydrates have a C H wait a C H oh H 2 oh a C H 2 oh, I knew I could get there Subunit Which means they all have the same They they're gonna have different numbers of carbons But you can add you can have 20 carbons and you'll have 40 Hydrogens and 20 oxygens, so they all have that same pattern They also can be found in You can have monosaccharides. Oh, I can never remember how to spell saccharides monosaccharides Which are single? Um Single subunit Single unit Carbohydrates, I'm just gonna give you an example glucose is a monosaccharide You can put them together to make other stuff like disaccharides We're just gonna make it. Okay that I said disaccharide Dysaccharides means we take two of those monosaccharides and stick them together For example, if you take a glucose monosaccharide and a fructose Monosaccharide and stick them together you get sucrose, which is a disaccharide and Then we have I want to say I just have to look up. Oh polysaccharides, of course poly mini Polysaccharides You knew exactly what I meant the polysaccharides are crazy comp like Hundreds and hundreds and hundreds of monosaccharides put together and I'm gonna show you a picture of Some oh man come back here to me. This is gonna take me one second There we go. Yes, that's what I would like you to see. Oh goody. That wasn't that bad These complex carbohydrates are polysaccharides and each one I don't know if you can see my mouse each one of these little circles on all of these is a Monosaccharide so you can see how we've put together all these monosaccharides in these strings to make different Complex carbohydrates. We have starch starch is a complex carbohydrate that you find in potatoes other delicious items Glycogen is a complex carbohydrate that you find in your liver. It's the way that your body Stores glucose for energy Cellulose is a complex carbohydrate. It's we can't digest cellulose. So it makes up dietary fiber for us But it is made of all these monosaccharides and then there's this one called chitin chitin has just Nitrogen atoms added and it's found in the exoskeletons of like crabs then Saubugs and other crustacean type critters with shells. They have chitins Oh and some fungi have chitin in their giddy ups. They use chitin Which is a string of monosaccharides and guess what? This is the crazy part about to blow your mind starch glycogen cellulose and chitin are all made from strings of glucose Nothing more You string together glucose in one way and you get starch you string together glucose in another way and you get glycogen String it together in another way and you get cellulose and string it together in another way and you get chitin Chitin is the only one that has a little bit of chemical Uniqueness with the glucose molecule because it has an extra nitrogen that replaces some other molecule I don't know if it replaces a carbon or what it replaces in there But they still consider it's basically glucose with this weird nitrogen Modification and it and it's a complex carbohydrate that has a totally different function Carbohydrates are usually energy providers and Or structural protection Lots of critters can eat cellulose cellulose is like the most common Complex carbohydrate on the planet I think and just because we can't eat it doesn't mean or digest We eat it and dietary fiber is super good for us, but our bodies can't digest it on Their own lots of things can't digest the cellulose on their own. They actually end up Recruiting bacteria to help with that task. Okay Carbohydrates we will see them we will build things with them We use them in all of our cells as signaling molecules and Fuel and we will see them over and over and over again, but now you have the basics