Q.

Which of the following is a fibrous protein?

A. Haemoglobin
B. Albumin
C. Keratin
D. Enzymes
Answer» C. Keratin
Explanation: Keratin is a family of fibrous structural proteins. It is the key structural material making up the outer layer of human skin. It is also the key structural component of hair and nails. Another example of fibrous protein is collagen.
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