Glycogen is a branched-chain polymer of α-D glucose units in which chain is formed by C1 - C4 glycosidic linkage whereas branching occurs by the formation of C1 - C6 glycosidic linkage. The structure of glycogen is similar to: 

1. Amylose

2. Amylopectin

3. Cellulose

4. Glucose

2. HINT: Glycogen is a glucose polysaccharide occurring in most mammalian and nonmammalian cells, in microorganisms, and even in some plants.

Glycogen is a branched-chain polymer of α- D glucose units in which the chain is formed by C1-C4 glycosidic linkage whereas branching occurs by the formation of C1-C6 glycosidic linkage. The structure of glycogen can be shown below similar to the structure of amylopectin.


Glycogen is also known as animal starch present in the liver, muscles, and brain.