Which carbohydrate is associated with the exoskeleton of arthropods, such as ticks?

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Multiple Choice

Which carbohydrate is associated with the exoskeleton of arthropods, such as ticks?

Explanation:
Chitin is the structural carbohydrate that forms the exoskeletons of arthropods like ticks. It is a long-chain polymer of N-acetylglucosamine that assembles into tough, lightweight microfibrils, which are often reinforced with proteins and cross-links to harden the shell in a process called sclerotization. This combination gives the exoskeleton durability and protection while remaining light enough for movement and growth through molting. The other options aren’t used for exoskeletons: cellulose supports plant cell walls, while starch and glycogen are storage polysaccharides for energy rather than structural components.

Chitin is the structural carbohydrate that forms the exoskeletons of arthropods like ticks. It is a long-chain polymer of N-acetylglucosamine that assembles into tough, lightweight microfibrils, which are often reinforced with proteins and cross-links to harden the shell in a process called sclerotization. This combination gives the exoskeleton durability and protection while remaining light enough for movement and growth through molting. The other options aren’t used for exoskeletons: cellulose supports plant cell walls, while starch and glycogen are storage polysaccharides for energy rather than structural components.

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