Immunology Activation Receptors and MHC Class I Molecules
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Questions and Answers

What is the role of plasma cells?

  • Activate B lymphocytes
  • Secrete antibodies (correct)
  • Activate complement
  • Trigger mast cell degranulation

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

  • IgA
  • IgE (correct)
  • IgD
  • None of the above

    • What is the first type of antibody to be secreted in response to a new antigen?

  • IgA
  • IgE
  • IgD (correct)
  • None of the above

    • What happens when some of the B cells differentiate into memory B cells?

    <p>They become plasma cells and secrete antibodies (C)</p> Signup and view all the answers

    What is the function of the activation receptor for MHC class I molecules?

    <p>To activate MHC class I molecules (B)</p> Signup and view all the answers

    How does the body respond to a vaccine?

    <p>By producing an immune response to a specific pathogen (C)</p> Signup and view all the answers

    What is the purpose of the membrane attack complex?

    <p>To destroy foreign cells or pathogens (B)</p> Signup and view all the answers

    What is the role of the reduction in MHC class I molecules?

    <p>To evade immune recognition by infected cells (C)</p> Signup and view all the answers

    Which type of immunity is slower and specific in targeting pathogens?

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

    Which specialized lymphoid organ monitors blood?

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

    Which element is not part of the innate immune system?

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

    What is the main function of natural killer (NK) cells in the immune system?

    <p>Destroy infected cells (A)</p> Signup and view all the answers

    What is the normal range for hematocrit?

    <p>37-54% (D)</p> Signup and view all the answers

    Which plasma protein is responsible for generating colloid osmotic pressure?

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

    What is the primary function of thrombocytes in the blood?

    <p>Blood clotting (D)</p> Signup and view all the answers

    What is the main function of granulocytes in the blood?

    <p>Immune response (D)</p> Signup and view all the answers

    What is the role of erythrocytes in the blood?

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

    In the given case study, what could be a possible reason for Erica's symptoms?

    <p>Malnutrition from omitting animal products (C)</p> Signup and view all the answers

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