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Exoskeleton of arthropods have a complex...

Exoskeleton of arthropods have a complex polysaccharide called chitin, which consists of only one type of amino sugar that is :-

A

N–acetyl–galactosamine

B

N–acetyl–glucosamine

C

`beta` –fructose

D

`beta` –glucose

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The correct Answer is:
B
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