Question

Which one of the following is a polysaccharide?

• A. Glucose
• B. Glycogen
• C. Maltose
• D. Lactose

Answer 1

The correct option is B

Glycogen

The correct option is B:

Explanation of the correct option:

1. Glycogen is a branched polysaccharide that acts as a storage form of glucose in animals and humans.
2. When the body needs energy, glycogen is broken down to glucose.
3. In fungi and bacteria, glycogen is an important form of glucose storage.

Explanation of the incorrect option:

Option A:

Glucose is a type of carbohydrate known as a simple sugar (monosaccharides).

Option C:

Maltose is a disaccharide of a glucose molecule that is linked by an α-(1, 4’) glycosidic bond.

Option D:

Lactose is a disaccharide molecule that is made up of glucose and galactose.

Final answer:

Glycogen is a branched polysaccharide of glucose.