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Hello students, in this question we have to give the common structural features and difference for each of the given pair.
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The first pair is cellulose and glycogen.
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The common structural feature involves both are polysaccharides that is it consists of more than two monomers.
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So both of them include glucose monomer.
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In particularly both of them consist of d -glucose unit.
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Coming to the difference cellulose involves beta 1 2 4 glycosidic linkage and it bond to the adjacent chain through a hydrogen bonding.
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Coming to the glycogen, the glycogen involves alpha 1 2 4 glycosidic linkage with the adjacent molecule with the adjacent chain it is bonded via alpha 1 2 6 glycosidic linkage at the branching point so that it will produces highly branched structure.
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Coming to the next pair that is d -glucose and d -fructose, coming to the common structural features both will be a monosaccharide and both have a common molecular formula of c6h12o6.
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So the next one is the both will have a 6 carbon backbone that is the 6 carbon chain and coming to the differences d -glucose consists of aldehyde group at first carbon while the d -fructose consists of keto group at second carbon...