Chitin is the second most abundant organic substance present in the exoskeleton of insects and crustaceans . It is a
Protien
Polysaccharide and the basic unit is N -acetylglucosamine
Protien and CaCO3 deposits in it
Lipid
As we have learned
Chitin -
Exoskeletons of arthropods have a complex polysaccharides called chitin. These complex polysaccharides are mostly homopolymers.
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