NEET levelSingle correct optionDifficulty 1 of 3bm086
On denaturation of a protein, which structure remains intact?
Aboth secondary and tertiary structures
Bsecondary structure
Ctertiary structure
Dprimary structure
Answer: D
Denaturation by heat or pH change breaks the hydrogen bonds and other weak interactions that maintain secondary and tertiary structure, but the covalent peptide bonds, and hence the amino acid sequence (primary structure), are unchanged.