Q.

The D-glucose unit at the branching point of amylopectin has free hydroxyl groups at which positions?

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a

C2 and C3

b

C3 and C4

c

C2, C3, and C6

d

C3, C4, and C6

answer is B.

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Detailed Solution

  • Amylopectin is insoluble in water and constitutes about 80- 85% of starch.
  •  It is a branched chain polymer of α-D-glucose units in which chain is formed by C1–C4 glycosidic linkage whereas branching occurs by C1–C6 glycosidic linkage.Oligosaccharides: Amylopectin, Amylose, Cellulose, Chitin
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