The exoskeleton of Arthropods is primarily composed of which polysaccharide?
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Correct answer: Chitin polymer
Chitin, a nitrogen-containing polysaccharide, forms the structural basis of the arthropod cuticle. It is often embedded with proteins or calcium carbonate for rigidity. Because chitin does not grow, arthropods must periodically shed it through ecdysis (molting) to increase in size.
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