LABORATORY REVIEW
MOLECULAR BIOLOGY
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Glycogen
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Cellulose
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Amylose
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Amylopectin
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Detailed explanation-1: -Amylopectin is a branched polymer of -d-glucopyranosyl units. As in amylose, the backbone of amylopectin is linked by -(1, 4’) glycosidic bonds. The branches in amylopectin link short chains of amylose by -(1, 6’) glycosidic bonds.
Detailed explanation-2: -Glycogen is a polysaccharide that consists entirely of glucose molecules that are linked by two types of bonds-the alpha-1, 4-glycosidic bond and the alpha-1, 6-glycosidic bond.
Detailed explanation-3: -Amylopectin consists of -1–4 linked d-glucopyranose linear chains that are connected by -1–6 branch linkages, about 5%. The molecule is highly branched and has a molecular size about DP 106.
Detailed explanation-4: -So, the correct answer is ‘Glycogen’.
Detailed explanation-5: -Starch is made up of glucose monomers that are joined by 1-4 or 1-6 glycosidic bonds. The numbers 1-4 and 1-6 refer to the carbon number of the two residues that have joined to form the bond.