The Ultimate Immune System Quiz

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Questions and Answers

Which type of immunity is mediated by lymphocytes stimulated by microbial antigens?

  • Innate immunity
  • Humoral immunity
  • Adaptive immunity (correct)
  • Cell-mediated immunity

Which cells of the immune system are always present and ready to eliminate infectious microbes?

  • Antigen-presenting cells
  • Innate immune cells (correct)
  • T lymphocytes
  • B lymphocytes

What is the function of B lymphocytes in the immune system?

  • To recognize peptide fragments of protein antigens
  • To produce cytokines that activate phagocytes
  • To kill infected cells harboring microbes in the cytoplasm
  • To produce antibodies (correct)

What is the function of T lymphocytes in cell-mediated immunity?

<p>To kill infected cells harboring microbes in the cytoplasm (C)</p> Signup and view all the answers

What is the function of helper T lymphocytes in the immune system?

<p>To produce cytokines that activate phagocytes (D)</p> Signup and view all the answers

What is the function of antigen-presenting cells in the immune system?

<p>To capture antigens of microbes and display them for recognition by T cells (C)</p> Signup and view all the answers

Which type of immunity consists of humoral immunity and cell-mediated immunity?

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

What is the main function of plasma cells in the immune system?

<p>To produce antibodies (D)</p> Signup and view all the answers

Where are lymphocytes and antigen-presenting cells organized in the immune system?

<p>In peripheral (secondary) lymphoid organs (A)</p> Signup and view all the answers

What is the function of naive lymphocytes in the immune system?

<p>To search for foreign antigens in peripheral lymphoid organs (B)</p> Signup and view all the answers

Which type of immunity is the early line of defense in the immune system?

<p>Innate immunity (D)</p> Signup and view all the answers

What are the sequential phases of adaptive immune responses?

<p>Antigen recognition, activation of the lymphocytes, differentiation of effector and memory cells, elimination of the microbes, decline of the immune response, long-lived memory (B)</p> Signup and view all the answers

Which type of immunity is mediated by lymphocytes stimulated by microbial antigens?

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

Which cells of the immune system are always present and ready to eliminate infectious microbes?

<p>Innate immune cells (B)</p> Signup and view all the answers

What is the function of B lymphocytes in the immune system?

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

What is the function of T lymphocytes in cell-mediated immunity?

<p>To kill infected cells harboring microbes in the cytoplasm (C)</p> Signup and view all the answers

What is the function of helper T lymphocytes in the immune system?

<p>To produce cytokines that activate phagocytes (B)</p> Signup and view all the answers

What is the function of antigen-presenting cells in the immune system?

<p>To capture antigens of microbes and display them for recognition by T cells (B)</p> Signup and view all the answers

Which type of immunity consists of humoral immunity and cell-mediated immunity?

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

What is the main function of plasma cells in the immune system?

<p>To produce antibodies (A)</p> Signup and view all the answers

Where are lymphocytes and antigen-presenting cells organized in the immune system?

<p>In peripheral (secondary) lymphoid organs (D)</p> Signup and view all the answers

What is the function of naive lymphocytes in the immune system?

<p>To search for foreign antigens in peripheral lymphoid organs (B)</p> Signup and view all the answers

Which type of immunity is the early line of defense in the immune system?

<p>Innate immunity (D)</p> Signup and view all the answers

What are the sequential phases of adaptive immune responses?

<p>Antigen recognition, activation of the lymphocytes, differentiation of effector and memory cells, elimination of the microbes, decline of the immune response, long-lived memory (D)</p> Signup and view all the answers

Which type of immunity is mediated by lymphocytes stimulated by microbial antigens?

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

Which type of immunity is the early line of defense, mediated by cells and molecules that are always present and ready to eliminate infectious microbes?

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

What are the cells of adaptive immunity that are the only cells with clonally distributed receptors specific for different antigens?

<p>T lymphocytes (A)</p> Signup and view all the answers

What is humoral immunity?

<p>Immunity in which antibodies neutralize and eradicate extracellular microbes and toxins (A)</p> Signup and view all the answers

What is cell-mediated immunity?

<p>Immunity in which T lymphocytes eradicate intracellular microbes (C)</p> Signup and view all the answers

What do B lymphocytes produce?

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

What do helper T lymphocytes produce?

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

What do cytotoxic T lymphocytes (CTLs) do?

<p>Kill infected cells harboring microbes in the cytoplasm (C)</p> Signup and view all the answers

What do antigen-presenting cells (APCs) do?

<p>Capture antigens of microbes that enter through epithelia, concentrate these antigens in lymphoid organs, and display the antigens for recognition by T cells (C)</p> Signup and view all the answers

Where are lymphocytes and APCs organized?

<p>In peripheral (secondary) lymphoid organs (A)</p> Signup and view all the answers

What do naive lymphocytes do?

<p>Search for foreign antigens (A)</p> Signup and view all the answers

Where do plasma cells remain?

<p>In the bone marrow (D)</p> Signup and view all the answers

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