Question

Glycogen on hydrolysis gives -

• A. lactose and glucose
• B. only glucose
• C. glucose and fructose
• D. glucose and maltose

Answer 1

The correct option is B

only glucose

Explanation for correct answer:

Option (B) only glucose

• Glycogen is a storage homopolysaccharide.
• It is a polymer of glucose.
• Glucose are formed when hydrolysis of glycogen occurs.
• Hydrolysis of Glycogen occurs in the presence of water molecules by the enzyme $\mathrm{\alpha }-1,6$ glucosidase.
• The cleavage occurs at $\mathrm{\alpha }-1,6$ bond.

Explanation for Incorrect answers:

Option (A) Lactose and Glucose.

• Lactose is a disaccharide .
• On hydrolysis, it gives galactose and Glucose with the help of the enzyme Lactase.
• Glucose is a monosaccharide.

Option (c ) Glucose and Fructose

• Glucose and Fructose are the hydrolysis products of Sucrose.
• They are formed by the enzyme Invertase.

Option (D) Glucose and Maltose

• Maltose is a disaccharide.
• On hydrolysis, it yields two molecules of Glucose in the presence of the enzyme Maltase.

Hence Option (B) Only Glucose is correct.