How is the polysaccharide heparin different from the glucose polysaccharides?

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Hi, everyone. And welcome back. Our next problem says which statements correctly describe the differences between the polysaccharide. Heparin and glucose based polysaccharides, select all that apply. And we have four statements which we'll go through. And our answer choices are a one and two, B one and three, C 12 and three or D 123 and four. So let's think through our statements here. Step one says Heparin contains sulfur whereas glucose based polysaccharides do not. So glucose based polysaccharides are kind of exactly what their name says. They have repeating glucose units and that's it. Whereas Heparin does indeed contain sulfur in the form of sulfates. So statement one is a correct description of differences, but all of our answer choices have statement one in them. So that doesn't really help us. State mode two says glucose based polysaccharides are used for energy storage while heparin is involved in anticoagulation. Well, this is kind of a nice basic one, glucose based polysaccharides used for energy storage such as starch. So statement two is another correct description of the differences. So with that, we can cross out choice B one and three since we know two must be true. But that's all we can eliminate here. Then we have statement three. Heparin is a Homo polysaccharide. While glucose based polysaccharides are hetero polysaccharides. So what is a homo polysaccharide? That would mean one that just has the same sugar. So this statement is in reverse because Heparin has repeating whereas Heparin has repeating dy saccharide units and of course, we have the sulfate groups on there. So our statement three has them backwards. So Heparin is a hetero polysaccharide. Wow, are glucose based soli sac rides just consist of repeating glucose units. So statement three is incorrect, the two things are flipped. So we know that statement three is not correct. So we can rule out choice C and choice D and here we have it, we've gotten ourselves by elimination to answer a one and two being correct. And this is a practice problem. So we're being thorough. So we'll look at statement four even though we don't need to glucose based poly sacrifice can form compact branch structures while Hepburn is more linear and unbranched and guess again, this is reversed. Heparin is highly branched. So while the first part is correct glucose based polysaccharides can have compact and branch structures, but Heparin is definitely not linear and unbranched. So statement four incorrect. So then we Hannah, we have two correct statements one and two as we predicted by our process of elimination. Choice A one and two is correct. See you in the next video.

How is the polysaccharide heparin different from the glucose polysaccharides?

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Key Concepts

Polysaccharides

Heparin

Glucose Polysaccharides