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Heparin is an example of ___________

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Heparin is an example of ___________

(a) Tertiary protein

(b) Oligosaccharides

(c) Glycoproteins

(d) Glycosaminoglycan

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I need to ask this question from Biological Molecules Structures and Functions topic in section Structures and Functions of Biological Molecules of Cell Biology

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The correct choice is (d) Glycosaminoglycan

For explanation: A more complex structures of polysaccharides is glycosaminoglycan (GAGs). Unlike other polysaccharides, they have an A-B-A-B where A and B represent two different sugars.  An example of GAG is heparin, which is secreted by cells in lungs against tissue damage. Heparin prevents blood coagulation, enabling free flow of blood to heart or lungs.

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