Question

Glycogen is a polymer of / Repeating unit of glycogen is-

• A. Galactose
• B. Glucose
• C. Fructose
• D. Sucrose

Answer 1

The correct option is B

Glucose

Explanation for correct answer:

Option (B) Glucose

• Glucose is the polymer or repeating unit of Glycogen.
• Glycogen is a storage homopolysaccharide.
• It is stored in Liver.
• The bonds present in glycogen are $\mathrm{\alpha }-1,4$ and $\mathrm{\alpha }-1,6$ glycosidic linkages.
• The structure of glycogen is

Explanation for incorrect answers:

Option (A) Galactose

• Galactose is the polymer of Hemicellulose.
• Hemicellulose is the structural polysaccharide.
• It is a heteropolysaccharide made up of Glucose, Mannose, Arabinose, Xylose and Galactose.
• The bonds present in Hemicellulose are $\mathrm{\beta }-1,4$ glycosidic linkages.
• The structure of Hemicellulose is

Option (C) Fructose

• Fructose is a monosaccharide which is a homopolymer of Inulin.
• The bonds present in inulin are $\mathrm{\beta }(2\to 1)$ glycosidic linkage.
• The structure of Inulin is

Option (D) Sucrose

• Sucrose is a Disaccharide.
• On hydrolysis, it yields Glucose and Fructose.
• The bonds present in Sucrose are $\mathrm{\alpha }-1$, and $\mathrm{\beta }-2$ glycosidic linkage.
• The structure of Sucrose is

Hence Option (B) Glucose is correct.