Question

What is the difference between glycogen and amylopectin with regard to their chemical structure? One sentence suffices.

Answer 1

Amylopectin and glycogen both are two types of branched polysaccharides. the main difference between amylopectin and glycogen is that amylopectin is insoluble in water whereas glycogen is soluble.
Amylopectin is one of the two types of starch, the main form of polysaccharide storage in plants. whereas glycogen is the main polysaccharide storage in animals.
The 1, 4 - alpha glycosidic bonds form the linear chain of both amylopectin and glycogen while 1,6- alpha glycosidic bonds form the branches.

Amylopectin refers to a branched chain polysaccharide that composes D- glucose units polymerized via 1,4- alpha glycosidic bonds. 1,6- alpha glycosidic bonds form its branches. Amylopectin may consists of thousands of glucose molecules.The branching occurs at every 25 to 30 units of glucose.

Glycogen refers to the polysaccharide storage of animals.1,4- alpha glycosidic bonds form its linear chain while 1,6- alpha glycosidic bonds form its branches. Further branching occurs in every 8 to 12 glucose molecules in the chain.