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Nancy Kirti Chahal
Asked: 2022-11-03T10:19:16+05:30 In:

Which of the following is true about IgM?
1. It is not produced by vertebrates
2. It forms the initial immune response
3. It is not an isotypes of antibody
4. It is the smallest antibody

Which of the following is true about IgM?
1. It is not produced by vertebrates
2. It forms the initial immune response
3. It is not an isotypes of antibody
4. It is the smallest antibody
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  1. Correct Answer – Option 2 : It forms the initial immune response

    Concept:

    • The human immunoglobulin system has 5 major classes.
    • IgG, IgM, IgA, IgD, and IgE are five immunoglobulins.
    • IgM appears first in exposure to antigen, followed by IgA.
    • The presence of IgM signifies a recent infection.
    • It has high agglutinating properties.

    Explanation:

    • IgM is produced by vertebrates.
    • IgM is one of the isotypes of immunoglobulin.
    • IgG is the smallest antibody in the human body. It is also the most common immunoglobulin.

    A fetus can also produce IgM.

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