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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.
Is cellulose and chitin also used to store energy? How do living things use cellulose and chitin?
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