Question:
Identify the protein present in nail.
Identify the protein present in nail.
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Remember that any outer, waterproof, protective body structure—such as hair, nails, claws, hooves, or horns—is primarily composed of the fibrous structural protein Keratin!
Updated On: Jun 12, 2026
- Albumin
- Keratin
- Myosin
- Legumelin
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Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Understanding the Question:
The question asks us to identify the specific structural protein that constitutes human nails from the provided list.
Step 2: Key Formula or Approach:
Proteins are broadly classified into fibrous and globular types based on their molecular shape and solubility. Fibrous proteins consist of elongated, parallel polypeptide chains held together by strong intermolecular bonds, making them tough and insoluble in water—ideal for protective structural biological tissues.
Step 3: Detailed Explanation:
Let's review the biological functions and locations of each listed protein option:
(A) Albumin: A soluble globular protein abundant in blood plasma that regulates osmotic pressure.
(B) Keratin: A tough, insoluble fibrous structural protein. It is the primary building block for outer protective layers in vertebrates, including human hair, nails, and the outer layers of skin.
(C) Myosin: A motor filament protein found in muscle tissues responsible for muscle contractions.
(D) Legumelin: A storage albumin protein found primarily within legume seeds.
Thus, Keratin is the correct protein found in nails, matching option (B).
Step 4: Final Answer:
The protein present in nails is Keratin, which corresponds to option (B).
The question asks us to identify the specific structural protein that constitutes human nails from the provided list.
Step 2: Key Formula or Approach:
Proteins are broadly classified into fibrous and globular types based on their molecular shape and solubility. Fibrous proteins consist of elongated, parallel polypeptide chains held together by strong intermolecular bonds, making them tough and insoluble in water—ideal for protective structural biological tissues.
Step 3: Detailed Explanation:
Let's review the biological functions and locations of each listed protein option:
(A) Albumin: A soluble globular protein abundant in blood plasma that regulates osmotic pressure.
(B) Keratin: A tough, insoluble fibrous structural protein. It is the primary building block for outer protective layers in vertebrates, including human hair, nails, and the outer layers of skin.
(C) Myosin: A motor filament protein found in muscle tissues responsible for muscle contractions.
(D) Legumelin: A storage albumin protein found primarily within legume seeds.
Thus, Keratin is the correct protein found in nails, matching option (B).
Step 4: Final Answer:
The protein present in nails is Keratin, which corresponds to option (B).
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