Which glycosidic linkages are present in the branched storage polysaccharide glycogen?
Answer and explanation
Correct answer: B. Alpha-1,4-glycosidic bonds in linear chains and alpha-1,6-glycosidic bonds at branch points
Glycogen is a highly branched homopolymer of glucose. Glucose residues within the linear chains are joined by alpha-1,4-glycosidic bonds, while branches occur approximately every 8 to 12 glucose units through alpha-1,6-glycosidic linkages, creating a dense, soluble tree-like architecture for rapid enzymatic phosphorolysis by glycogen phosphorylase.
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