Question

The chitinous exoskeleton of arthropods is formed by the polymerisation of

(a) N ­- acetyl glucosamine

(b) lipoglycans

(c) keratin sulphate and chondroitin sulphate

(d) D ­- glucosamine.

Answer 1

Ans: (a) N-acetyl glucosamine

Sol: Exoskeleton of arthropods is made up of NAG$\implies$N-acetyl glucosamine.