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Immune Responses and Immunization

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Questions and Answers

What is the function of neutralization antibodies in the immune response?

They produce a membrane attack complex, leading to cell lysis

They bind to antigens on bacteria, marking them for phagocytosis

They trigger the activation of complement proteins

They bind to viral surface proteins, preventing infection of a host cell (correct)

What is the outcome of the formation of a membrane attack complex?

Neutralization of the virus

Activation of macrophages

Lysis of the foreign cell (correct)

Phagocytosis of the foreign cell

Which class of immunoglobulin is the most abundant in the body?

IgM

IgA

IgE

IgG (correct)

What is the role of opsonization in the immune response?

It marks bacteria for phagocytosis by macrophages or neutrophils Signup and view all the answers

Which immunoglobulin is membrane-bound?

IgD Signup and view all the answers

What is the role of antigen-antibody complexes in the immune response?

They trigger the activation of complement proteins Signup and view all the answers

What is the outcome of phagocytosis in the immune response?

Elimination of the foreign cell or particle Signup and view all the answers

Which immunoglobulin is the first soluble class produced?

IgM Signup and view all the answers

What is the role of the complement system in the immune response?

It forms a membrane attack complex, leading to cell lysis Signup and view all the answers

How many different forms of immunoglobulin can B cells express?

5 Signup and view all the answers