Answer:
B) Glucose molecules are joined in long, branched chains to make glycogen that allows for long term energy storage in animals.
Explanation:
Starch:
Starch is a complex polysaccharide made up of glucose molecules bonded via glycosidic linkage. Starch is primarily of two forms:
- A linear polymer of glucose molecules bonded together by α 1,4 glycosidic linkage known as amylose.
- A highly branched, complex polymer of glucose bonded together by α-1,4 and α-1,6 glycosidic linkages known as amylopectin. The α-1,6 linkage is responsible for branching in amylopectin.
Unlike starch, cellulose is a polymer consisting of linear chains of glucose units. Cellulose is indigestible for humans. It is excreted as dietary fiber.
Glycogen:
Glycogen is the primary form of glucose storage in animals, fungi and bacteria. Glycogen is also a complex, branched polymer of glucose units. Glycogen mainly contains amylopectin i.e a highly branched form of glucose polymer that contains α-1,4 and α-1,6 glycosidic linkages.
Chitin:
Chitin is a long chain polymer of modified form of glucose i.e. N-acetylglucosamine which is a nitrogen containing derivative of glucose. N-acetylglucosamine monomers are linked together through glycosidic bonds.
