Antibodies and Immune Response Quiz
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Questions and Answers

What is the role of T cells in humoral immunity?

  • Ingest and disable bacteria
  • Recognize antigen on B cells (correct)
  • Secrete antibodies
  • Activate mast cells

Which cells present antigens to ingest and disable bacteria?

  • Mast cells
  • B lymphocytes
  • Plasma cells
  • Phagocytes (correct)

What is the main function of B lymphocytes in humoral immunity?

  • Activate mast cells
  • Ingest and disable bacteria
  • Secrete antibodies (correct)
  • Activate complement proteins

What is the significance of coordinating the innate and specific immune system in response to extracellular bacteria?

<p>To eliminate bacteria (C)</p> Signup and view all the answers

What is the main function of plasma cells?

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

Which class of antibody is good at causing antigen clumping and activating complement?

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

What is the role of IgD antibodies?

<p>None of the above (D)</p> Signup and view all the answers

In the activation of B cells in response to an antigen, what is the correct order of the steps?

<p>4, 5, 3, 2, 1 (A)</p> Signup and view all the answers

What is the function of toll-like receptors?

<p>To defend against extracellular bacteria (C)</p> Signup and view all the answers

What is opsonization?

<p>Coating substance with an opsonin (A)</p> Signup and view all the answers

What would be impaired in individuals with mutations in toll-like receptors?

<p>The ability to defend against extracellular bacteria (D)</p> Signup and view all the answers

What happens when MHC class I expression is reduced on a cell?

<p>The cell becomes susceptible to killing by NK cells (D)</p> Signup and view all the answers

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