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Hair, finger,nails, hoofs, etc. are all ...

Hair, finger,nails, hoofs, etc. are all made of:

A

Iron

B

Fat

C

Vitamin

D

Protein

Text Solution

Verified by Experts

The correct Answer is:
D
Hair nails, hoofs etc. are made of Keratin, a kind of protein having coiled polypeptide chains.
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