The structure of protein that is unaffected by heating is:
Biomolecules · Class 12 · JEE Main Previous Year Question
The structure of protein that is unaffected by heating is:
- a
Secondary structure
- b
Tertiary structure
- c✓
Primary structure
- d
Quaternary structure
Primary structure
Step 1: Understanding Denaturation — Heating or chemical treatment causes proteins to lose their folded structures: secondary, tertiary, and quaternary.
Step 2: Identifying the Affected Forces — Non-covalent bonds (like H-bonds and hydrophobic links) are disrupted, causing the protein to unfold.
Step 3: Finding the Intact Structure — The strong covalent peptide bonds that maintain the primary structure (amino acid sequence) remain unaffected by moderate heating. Correct option is (c).
Key Point: Denatured proteins lose biological function but keep their chemical identity.
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