In the context of the given picture, answer the following questions:
Which among the following is not a type of antibody present in our body?
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → IgF
Antibodies are also called immunoglobulins, shortened to Ig. Our body makes different types of antibodies, named by a letter after Ig. The book names IgA, IgM, IgE and IgG. The question asks which option is not one of these.
Option (1) IgE — A type of antibody. Immunoglobulin E is one of the antibody types the book names.
Option (2) IgM — A type of antibody. Immunoglobulin M is one of the antibody types the book names.
Option (3) IgF — Not a type of antibody. There is no antibody called IgF. It does not appear in the list of antibody types.
Option (4) IgA — A type of antibody. Immunoglobulin A is one of the antibody types the book names.
NCERT Extract:
Acquired Immunity – “… Each antibody molecule has four peptide chains, two small called light chains and two longer called heavy chains. Hence, an antibody is represented as H2L2. Different types of antibodies are produced in our body. IgA, IgM, IgE, IgG are some of them. A cartoon of an antibody is given in Figure 7.4.”