in this video, we're going to begin our lesson on Polly Sacha rides. So recall from our previous lesson videos that Polly Sacha Rides is the largest size class of carbohydrates, containing greater than 20 co violently linked mono sacha rides. And so Polly Sacha rides can be quite enormous, sometimes containing greater than one million sugar units. But really other than being enormous Polly Sacha ride composition is actually relatively simple, especially in comparison to Allah Go sacha rides, which might be a little bit surprising to you guys. And so, as we'll see moving forward in our course, Polly Sacha rides are usually going to consist of just one or two different types of mono sack rides. And these one or two different types of mono sack rides are going to be repetitive. Lee linked together to create these large Polly Sacha ride structures, and so because they contain just one or two different types of mono sacha rides that makes their composition relatively simple. But you might recall when we talked about Glencoe congregates and a Lego sack a ride, portions of Glencoe conjugate that they're very heterogeneous, and so they usually contain a variety of different types of mono sack rides, usually greater than two. And so that is what makes the Allah go sack right Composition mawr complex. Now, as we move forward in our course and talk about specific policy sack rides, we'll find that their functions are going to include structural support or, uh, acting as energy storage molecules. And so notice down below. We have a new image over here of a linear form of Upali sack. Right where you can see you can have the same exact sugar units just repetitive Lee linked together, creating the long chain. And then over here, you can see that we have another Polly sack ride that is branched. It's creating all of these different, um, branch chain. So not forming the linear chains. And, uh, this is, uh, seems to be made up of multiple different types of sugars. And so as we move forward in our course, we're gonna continue to talk more and more about Polly Sacha ride. So I'll see you guys in our next video

in this video, we're going to talk about how Polly Sacha rides differ from each other. And so Polly Sacha rides can actually differ from each other and at least one of the following four ways that we have listed down below. And so the first way that they can differ from each other is in the identity of their re occurring sugar units. And so whether these sugar units are D glucose molecules or some other sugar molecule, that is gonna be one way that the poly sack rights could differ. Now, the next way that the poly sack rats come differ is in the types of glucose acidic bonds that are linking together their sugar units. And so whether these are Alfa 14 Glick ascetic bonds or if they're beta 14 Gleick, acidic bonds that is going to be another way that these police, aka rides, condemn for the third way that the poly Sacha rides condemn for is in the length of their chain. So basically in the total number of sugar units that the entire Polly Sacher at molecule contains, and then the fourth way that Polly Sacha rides condemn for from each other is in the degree of branching that occurs in the Pali Sacha ride structure. And so moving forward will be able to see different Polly sack rides that vary in each of these four different categories. And so it's important to note that each of these four different factors will actually influence a poly. Sacha rides physical and chemical properties. And so that's important to keep in mind again as we move forward and discuss specific Polly Sack rides. And so that concludes our introduction to how Polly Sacha rides condemn for from each other. And again, we'll continue to learn more about Polly. Sacha rides as we move forward, so I'll see you guys in our next video.

in this video, we're going to distinguish between Homo Polly sack rides and hetero Polly sack rides. And so, in general, there are two major categories that all Polly Sacha rights could fall under. The first is going to be home. Oh, Polly, Sacha rides and the second is going to be hetero Polly Sacha rides now Homo Polly Sacha rides recall that the prefix homo means the same. And so these poly sacha rides consists of repeating units of Onley, one single type of mono sack ride sugar. And so it's going to be the same exact sugar that is repetitive Lee linked over and over and over again. And so, as we move forward in our course, will find that Homo Polly Sacha rides usually function as interest cellular structures and or as energy storage molecules. Now hetero Polly Sack Rides, on the other hand, recalled that the prefix hetero means different and so hetero. Polly Sack Rides consists of greater than two different kinds of mono sack rides, repetitive Lee linked together. And so as we move forward in our course, we'll find that hetero Polly Sacha rides usually function as extra cellular structures, meaning that they form the structures on the outside of the cell, whereas Homo Polly Sacha rides. Um, they're forming the structures typically on the inside of the cells. So if we take a look at our image down below over here on the left hand side, noticed that we're showing you homo Polly's sacha rides because we have the same exact blue sugar unit repetitive Lee, linked over and over and over and over again. Now notice that we have an UN branch form here which is just a straight linear chain with no branches coming off. But then you can also have branched Homo Polly Sacha rides, which you can see there is a branch chain coming off of the main chain. Now, over here on this side, what we have are, of course, hetero Polly Sacha rides. And so you can see that the hetero Polly sack rides are gonna contain greater than greater than or equal to, I should say, uh, two different kinds of mono Sacha rides and so you can see that we've got the yellow and the blue mono sacha ride linked together. And this is an UN branched chain. As you can see, there are no branches coming off. This is a linear. And then over here on the right, what we have is the branched, hetero Polly sack, right? So you can see it's made up of more than one sugar unit. And it is indeed branch, since there is a chain coming off of the main chain. And so again, as we move forward in our course, we're going to see examples of both Homo Polly Sacha rides and hetero Polly Sacha rides as well. And so that concludes this video, and I'll see you guys in our next one.