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Immunology Quiz on Antibody Classes

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Questions and Answers

Which class of immunoglobulin is the most abundant in serum and extracellular fluid?

IgM
IgG (correct)
IgE
IgA

What is the primary role of IgA antibodies?

To facilitate T cell activation
To promote allergic reactions
To protect mucosal surfaces (correct)
To initiate blood clotting

Which class of immunoglobulin is primarily involved in allergic reactions?

IgE (correct)
IgG
IgM
IgD

Which antibody class is formed first in response to an infection?

<p>IgM (C)</p> Signup and view all the answers

What distinguishes IgD from other immunoglobulin classes?

<p>It serves as a receptor on B cells (A)</p> Signup and view all the answers

Flashcards

Antibody classes

Five types of immunoglobulins found in vertebrates: IgG, IgA, IgM, IgE, and IgD.

IgG function

A common antibody class that helps protect the body against pathogens. (immune response).

IgA function

Found in bodily secretions like saliva and breast milk, protecting against pathogens.

IgM function

Responsible for initial immune responses.

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IgE function

Important in allergic reactions and parasitic infections.