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Question

The chitinous exoskeleton of arthropods is formed by polymerization of:

A
Keratin sulphate and chondroitin sulphate
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B
D-glucosamine
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C
N-acetyl glucosamine
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D
Lipoglycans
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Solution

The correct option is A N-acetyl glucosamine

The chitinous exoskeleton of the insects is the result of the polymerization of N-acetyl glucosamine, which is a derivative of glucose It is also a characteristic component of the cell wall of fungi, the radulae of molluscs, and the beaks and internal shells of cephalopods including squid and octopuses. So, the correct answer is ‘N-acetyl glucosamine.'


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