What is the basic structural difference between starch and cellulose?
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Starch vs. Cellulose: Structure. The structure formed when the molecules share oxygen is determined by whichform of glucose is linked together. Starch contains alpha glucose, while cellulose is made of beta glucose. This difference may seem minor, but it plays a big role in the 3-D shape of the molecule.
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Starch contains a amylose and amylopectin. Amylose is a linear polymer of ∝ - D---- glucose whereas cellulose is a linear polymer of β - D---- glucose. In amylose, C 1 of one glucose unit is connected to C 4 of the other through ∝ - glycosidic linkage.
Cellulose is straight chain polysaccharide composed only of β - D - glucose. Units which are joined by glycosidic linkage between C 1 of one glucose unit and C 4 of the next glucose unit.
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