MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Organic ChemistryBiomoleculesPrevious Year Questions
Which of the statements about “Denaturation” given below are correct? (AIPMT 2011) (1) Denaturation of proteins causes loss of secondary and tertiary structures of the protein. (2) Denaturation leads to the conversion of double strand of DNA into single strand. (3) Denaturation affects primary structure which gets distorted.
A.(2) and (3)
B.(1) and (3)
C.(1) and (2)✓ Correct
D.(1), (2) and (3)
Explanation
Denaturation does not change the primary structure of protein but changes secondary and tertiary structures of the protein. The double-stranded DNA is heated up to 98° C which causes the hydrogen bonds to break and the two strands get separated. This is the denaturation of DNA.
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