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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