Question:
Identify a protein present in nails
Identify a protein present in nails
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Nails, hair and horns are made of keratin, a fibrous structural protein.
Updated On: Oct 1, 2026
- Legumelin
- Keratin
- Myosin
- Insulin
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
Proteins are classified as fibrous (long threads, insoluble in water, structural) and globular (folded, soluble, functional).
Step 2: Key Formula or Approach:
Match each protein with its location and role.
Step 3: Detailed Explanation:
Keratin is a fibrous protein found in hair, nails, horns, wool and the outer skin layer. It is rich in cysteine, whose disulphide bridges make it tough.
Legumelin is a globular protein of the legume (pea) family and is not found in human nails.
Myosin is a fibrous protein of muscle that helps contraction.
Insulin is a hormone, a small globular protein that controls blood sugar.
Final Answer:
Nails contain keratin, option (B). \[ \boxed{\text{Keratin (B)}} \]
Proteins are classified as fibrous (long threads, insoluble in water, structural) and globular (folded, soluble, functional).
Step 2: Key Formula or Approach:
Match each protein with its location and role.
Step 3: Detailed Explanation:
Keratin is a fibrous protein found in hair, nails, horns, wool and the outer skin layer. It is rich in cysteine, whose disulphide bridges make it tough.
Legumelin is a globular protein of the legume (pea) family and is not found in human nails.
Myosin is a fibrous protein of muscle that helps contraction.
Insulin is a hormone, a small globular protein that controls blood sugar.
Final Answer:
Nails contain keratin, option (B). \[ \boxed{\text{Keratin (B)}} \]
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