Where are glycogen, cellulose, and chitin naturally found and how do living things utilize these polysaccharides?

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aimeefarnum | High School Teacher | (Level 2) Adjunct Educator

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Cellulose is a sugar used in cell walls of plant cells. Chitin is found in exoskeletons of insects and Arthropods (such as shrimp) and beaks of Cephalopods (such as squid) Glycogen is found in adipose (fat) tissue of animals and fungi. It is used to store energy.