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What is the name of a structural protein, Present in the horn of a rhinoceros and in the hair of human being?

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What is the name of a structural protein, Present in the horn of a rhinoceros and in the hair of human being?

(a) Amino acid

(b) Keratin

(c) Glycolytic

(d) Melanin

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(b) Keratin

Keratin is a fibrous structural protein which is a ma constituent of nails, horns, paws, hooves and even the outermost dermal layer of human skin.

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