JEE Main202621 January 2026Evening ShiftChemistryBiomoleculesActual
The correct statements are : A. Activation energy for enzyme catalysed hydrolysis of sucrose is lower than that of acid catalysed hydrolysis. B. During denaturation, secondary and tertiary structures of a protein are destroyed but primary structure remains intact. C. Nucleotides are joined together by glycosidic linkage between C ₁ and C ₄ carbons of the pentose sugar. D. Quaternary structure of proteins represents o
Options
- AA and B Only
- BA, B and D Only
- CB and C Only
- DA, C and D Only
Correct answer
A. A and B Only
Step-by-step solution
Statement A is correct: Enzymes lower the activation energy barrier for reactions, making enzyme-catalyzed hydrolysis of sucrose have lower activation energy than acid-catalyzed hydrolysis. Statement B is correct: Denaturation disrupts hydrogen bonds and hydrophobic interactions maintaining secondary and tertiary structures, but the covalent peptide bonds forming the primary structure remain intact. Statement C is incorrect: Nucleotides are joined by phosphodiester linkages between the 3' and 5' carbons of adjacent