Fundamentholfundamenthol
NEET2025Biology
Q.

Identify the statement that is NOT correct.

  1. A

    Constant region of heavy and light chains are located at C-terminus of antibody molecules

  2. B

    Each antibody has two light and two heavy chains.

  3. C

    The heavy and light chains are held together by disulfide bonds.

  4. D

    Antigen binding site is located at C-terminal region of antibody molecules.

Solution

An antibody (immunoglobulin) is represented as — two heavy and two light chains held together by disulfide bonds. The constant regions lie at the C-terminus, while the variable regions and therefore the antigen-binding sites are located at the N-terminus, not the C-terminus.

Statement (4) is incorrect.

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