NEET Questions Solved

NEET - 2015

The chitinous exoskeleton of arthopods is formed by the polymerisation of 

(1) keratin sulphate and chondroitin sulphate

(2) D-glucosamine

(3) N-acetyl glucosamine

(4) lipoglycans

(3) The chitinous exoskeleton of arthropods is formed by the polymerisation 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.

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