Question

Our hair and nails contain:

• A. Protein
• B. Calcium
• C. Chlorine
• D. Phosphorus

Answer 1

The correct option is A

Protein

The correct option is A.

Explanation of the correct answer:

1. Our nails and hair are made up of a protein known as keratin.
2. Keratin belongs to a group of fibrous structural proteins that are known as scleroproteins.
3. The hair grows in a hair follicle, and nails grow from the matrix i.e., the base of the nail bed.

Explanation of the incorrect options:

Option B:

Our hair and nails do not contain calcium.

Option C:

Our hair and nails do not contain chlorine.

Option D:

Our hair and nails do not contain phosphorus.

Final answer: Our hair and nails contain protein.