Question

Which of these is a polysaccharide?

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

Answer 1

The correct option is B Glycogen

Lactose is a disaccharide formed by glucose and galactose.

Glycogen is a polymer of glucose. It's structure similar to amylopectin where two polymeric chain of glucose of alpha 1,4 glucose unit are linked by alpha 1,6 linkage. It is used as stored reserve in muscles. The glycogen is changed into glucose by glycogenolysis in the muscles and the glucose produces energy in form of ATP to the muscle by the process of glycoslysis.

Sucrose is a disaccharide formed by glucose and fructose.

Maltose is a disaccharide formed by glucose monomers.

So, the correct answer is option B.