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?

<p>It marks bacteria for phagocytosis by macrophages or neutrophils (C)</p> Signup and view all the answers

Which immunoglobulin is membrane-bound?

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

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

<p>They trigger the activation of complement proteins (C)</p> Signup and view all the answers

What is the outcome of phagocytosis in the immune response?

<p>Elimination of the foreign cell or particle (B)</p> Signup and view all the answers

Which immunoglobulin is the first soluble class produced?

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

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

<p>It forms a membrane attack complex, leading to cell lysis (D)</p> Signup and view all the answers

How many different forms of immunoglobulin can B cells express?

<p>5 (C)</p> Signup and view all the answers

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