Question 26 (Choice 1) - Biology - CBSE Class 12 Sample Paper for 2023 Boards - Solutions - Solutions to CBSE Sample Paper - Biology Class 12

Last updated at July 13, 2026 by

Highlight the structural importance of an antibody molecule with a diagram. Name the four types of antibodies found to give a humoral immune response, mentioning the functions of two of them you have studied.

 

Answer:

An antibody molecule consists of four polypeptide chains, two are long called heavy (H) chains while other two are short called light (L) chains. Both are arranged in the shape of Y. Hence, the antibody is represented as H 2 L 2 .

[Biology Class 12] Highlight the structural importance of an antibody - Biology - CBSE Class 12 Sample Paper for 2023 Boards - Solutions

Light chain, Heavy Chain

Types of Antibody –

IgA, IgM, IgE,IgG

IgA – Lactating Mother to protect their infant

Ig E – To protect from allergen

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