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Amylopectin is a branched-chain polysaccharide composed of glucose units linked primarily by ______.
Question

Amylopectin is a branched-chain polysaccharide composed of glucose units linked primarily by ______.

A.

β-1,6-glycosidic bonds

B.

α-1,2-glycosidic bonds

C.

β-1,4-glycosidic bonds

D.

α-1,4-glycosidic bonds

Correct option is D

The correct answer is: (D) α-1,4-glycosidic bonds
Explanation:
● Amylopectin is a branched-chain polysaccharide found in starch.
● Its primary backbone consists of α-1,4-glycosidic linkages between glucose units.
● Branching occurs through α-1,6 linkages, but these are fewer and not the main bonds.
Information Booster:
● Amylopectin makes up about 70–80% of starch.
● It is less compact than amylose due to branching.
● Branches occur roughly every 24–30 glucose units.
● Digested by enzymes like amylase and debranching enzymes.
● Found in foods like rice, potatoes, maize and wheat.
Additional Knowledge:
β-1,6 bonds: Incorrect; branching uses α-1,6, not β-1,6.
 α-1,2 bonds: Rare in natural polysaccharides.​​

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