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Chemistry · Biomolecules

JEE Main 2026 — 21 January, Evening Shift — Question 56

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 C1\mathrm{C}_{1} and C4\mathrm{C}_{4} carbons of the pentose sugar

D. Quaternary structure of proteins represents overall folding of the polypeptide chain.

Choose the correct answer from the options given below:

  1. Option A:

    A, C and D Only

  2. Option B:

    A, B and D Only

  3. Option C:

    A and B Only

    Correct
  4. Option D:

    B and C Only

Answer: C

Step-by-step solution

Activation energy for enzyme catalysed hydrolysis of sucrose is lower than that of acid catalysed hydrolysis. During denaturation secondary and tertiary structures of a protein are destroyed but primary structure remains intact.

Answer key and solution verified before publishing.

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Exam
JEE Main 2026
Paper
21 January, Evening Shift
Subject
Chemistry
Chapter
Biomolecules
Topic
Enzymes
The correct statements are: A. Activation energy for enzyme catalysed… | JEE Main 2026 PYQ with Solution · DhiX AI