COMPASSLearning
RegisterLogin

JEE Main · 2024 · 05 Apr 2024 · Shift 2 · Biomolecules

WhatsApp Email
Coagulation of egg, on heating is because of :
  1. (A)Denaturation of protein occurs✓ Correct
  2. (B)The secondary structure of protein remains unchanged
  3. (C)Breaking of the peptide linkage in the primary structure of protein occurs
  4. (D)Biological property of protein remains unchanged

Answer: (A)

Solution

Heating disrupts the hydrogen bonds and other non-covalent interactions that hold a protein's secondary and tertiary structure, causing it to unfold irreversibly; the peptide bonds of the primary structure are not broken. This loss of native folded structure is denaturation, and the resulting insoluble, unfolded protein is observed as coagulation.

JEE Main · 2024 · 05 Apr 2024 · Shift 2 · Single correct option

Practise more: all JEE Main PYQs on Biomolecules →

More JEE Main questions on Biomolecules

  1. Identify the correct statements.

    A. Arginine and Tryptophan are essential amino acids.
    B. Histidine does not contain heterocyclic ring in its structure.
    C. Proline is a six membered cyclic ring amino acid.
    D. Glycine does not have chiral centre.
    E. Cysteine has characteristic fe …
    JEE Main 2026View solution →
  2. Given below are two statements:

    Statement I: Sucrose is dextrorotatory. However sucrose upon hydrolysis gives a solution having mixture of products. This solution shows laevorotation.

    Statement II : Hydrolysis of sucrose gives glucose and fructose. Since the laevorotation of gl …
    JEE Main 2026View solution →
  3. 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 a …
    JEE Main 2026View solution →
  4. Match List-I with List-II.

    List-I
    Reaction of glucose with
    A. Hydroxylamine
    B. water
    C. Excess acetic anhydride
    D. Concentrated

    List-II
    Product formed
    I. Glouconic acid
    II. Glucose pentacetate
    III. Saccharic acid
    IV. Glucoxime

    Choose th …
    JEE Main 2026View solution →
  5. Both human DNA and RNA are chiral molecules. The chirality in DNA and RNA arises due to the presence of
    JEE Main 2026View solution →
  6. The number of possible tripeptides formed involving alanine (ala), glycine (gly) and valine (val), where no amino acid has been used more than once is :
    JEE Main 2026View solution →