The Human Major Histocompatibility Complex (MHC) and Immune Responses Quiz
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Questions and Answers

Which of the following is true about the CD system used in immunophenotyping?

  • CD system is used to identify self vs. non-self cells
  • CD system is used to define cells based on their surface molecules (correct)
  • CD system is used to associate cells with certain immune functions
  • CD system is used to identify immune functions

    • What is the function of the thymus?

  • Activation of macrophages
  • Filtering of lymph nodes
  • Education of T-cells (correct)
  • Production of antibodies

    • What is the percentage of cellularity in the bone marrow at 10 years old?

  • 80% cellular
  • 90% cellular (correct)
  • 70% cellular
  • 60% cellular

    • Which type of T cells are the major regulators of the immune response and produce lymphokines?

    <p>Helper T cells</p> Signup and view all the answers

    Which type of T cells mediate the killing of cells, viruses, tumors, and transplants?

    <p>Cytotoxic T cells</p> Signup and view all the answers

    Which type of cells are responsible for direct killing of viruses, tumors, and transplants?

    <p>Natural Killer cells</p> Signup and view all the answers

    Which type of cells produce cytokines and lymphokines to ensure a robust immune response?

    <p>All of the above</p> Signup and view all the answers

    Which of the following is NOT a type of antigen?

    <p>Immunoglobulins</p> Signup and view all the answers

    Which of the following is the correct order of immunoglobulin abundance in plasma?

    <p>IgG &gt; IgA &gt; IgM &gt; IgD &gt; IgE</p> Signup and view all the answers

    Which region of an antibody is responsible for binding to antigens?

    <p>Fab region</p> Signup and view all the answers

    What is the purpose of adjuvants in vaccines?

    <p>To help or enhance vaccine efficacy</p> Signup and view all the answers

    Which of the following is true about Staphylococcus epidermidis?

    <p>Most strains do not cause illness.</p> Signup and view all the answers

    What type of infections does Staphylococcus epidermidis commonly cause?

    <p>Skin infections</p> Signup and view all the answers

    What is the term used to describe Staphylococcus epidermidis strains that are resistant to multiple antibiotics?

    <p>MRSA strains</p> Signup and view all the answers

    Which of the following is NOT a function of the thymus?

    <p>Production of B lymphocytes</p> Signup and view all the answers

    Which of the following is a characteristic of lymph nodes?

    <p>They have a cortex with a lot of T lymphocytes</p> Signup and view all the answers

    What is the primary function of dendritic cells?

    <p>Antigen presentation</p> Signup and view all the answers

    Which type of immunity is characterized by the production of antibodies?

    <p>Humoral immunity</p> Signup and view all the answers

    Which chromosome is the Human Major Histocompatibility Complex Class II D region located on?

    <p>Chromosome #6</p> Signup and view all the answers

    What are the three major classes coded by the Human Major Histocompatibility Complex?

    <p>Class I- A, B, C; Class II- DP, DQ, DR; Class III</p> Signup and view all the answers

    Which cells are responsible for processing and presenting antigens to T cells?

    <p>Dendritic cells, B cells or macrophages</p> Signup and view all the answers

    What is the role of Antigen Presenting Cells (APCs) in T cell responses?

    <p>APCs are key to the genesis of T cell responses</p> Signup and view all the answers

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