Cells - The Unit of Life
Which one of the following biomolecules is correctly characterised?
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Single Choice
Which of the following statements is not correct regarding chitin?
AIt is a storage polysaccharide
Correct Answer
BIt is a homopolysaccharide
CIt is a constituent of arthropod exoskeleton and fungal cell wall
DIt is the second most abundant carbohydrate on earth
Solution
Chitin is the second most abundant polysaccharide (after cellulose). Chitin is not a storage polysaccharide rather it is a structural homopolysaccharide which forms the structure component of fungal walls and exoskeleton of artropods. It is an unbranched polysaccharide formed of N- acetylglucosamine (NAG) monomers joined together by $$\beta-1,4$$ linkages.
So, the correct answer is 'It is a storage polysaccharide'.
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