- Chitin: consists of N-acetylglucosamine residues, provides structural support for animals such as arthropods.
- Starch: is made up of two glucose polysaccharides, amylose and amylopectin, functions in fuel storage in plant cells.
- Glycogen: is the storage form of glucose in animals, functions in fuel storage in animal cells.
- Cellulose: provides structural support for plants.
Each polysaccharide has its own unique properties and functions. Chitin is a structural polysaccharide that provides support for the exoskeletons of animals such as arthropods. Starch is a glucose-based polysaccharide that functions as a storage form of fuel in plants. Glycogen is also a glucose-based polysaccharide, but it functions as a storage form of fuel in animals. Finally, cellulose is a structural polysaccharide that provides support for plants.
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