alleryDuring denaturation, which level of protein structure remains intact?
AThe primary structure
BThe tertiary structure
CThe secondary structure
DThe quaternary structure
Answer & Solution
Correct answer: A. The primary structure
1. Denaturation unfolds a protein without breaking it into pieces.
2. The sequence of amino acids survives that unfolding.
3. During denaturation secondary and tertiary structures are destroyed but primary structure remains intact.
4. So the primary structure survives.
_Source: syllabus Chemistry Part II, Ch 10 'Biomolecules'_
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