Question:
Which one of the following is not a protein?
Which one of the following is not a protein?
Show Hint
Which one of the following is not a protein?
Updated On: Apr 15, 2026
- Wool
- Nail
- Hair
- DNA
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Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Step 1: Concept
Proteins are polymers of amino acids linked by polypeptide bonds.
Step 2: Analysis
Wool, hair, and nails are made of fibrous proteins (keratin).
Step 3: Analysis
DNA is a nucleic acid, which is a polymer of nucleotides and contains no polypeptide bonds.
Step 4: Conclusion
Therefore, DNA is not a protein.
Final Answer: (D)
Proteins are polymers of amino acids linked by polypeptide bonds.
Step 2: Analysis
Wool, hair, and nails are made of fibrous proteins (keratin).
Step 3: Analysis
DNA is a nucleic acid, which is a polymer of nucleotides and contains no polypeptide bonds.
Step 4: Conclusion
Therefore, DNA is not a protein.
Final Answer: (D)
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