Question

What is the name of protein which is found in nail, hair, and horns?

(a) Myoglobin

(b) Hemoglobin

(c) Keratin

(d) Collagen

I have been asked this question during an interview for a job.

This key question is from Fibrous and Globular Proteins topic in division Biomolecules and Catalysis of Life Sciences

Answer 1

Correct answer is (c) Keratin

For explanation: Keratin is the fibrous protein present in the eukaryotes. They have been further classified into α-keratin and β-keratin, in which α-keratin is tough and insoluble and constitute almost the entire dry weight of hair, wool, nail, claws, horn, hooves etc.