Immunity Chapter 07 Quiz
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Questions and Answers

Neutrophils

  • produce antibodies.
  • are elevated during an allergic response.
  • produce histamine.
  • are phagocytic cells. (correct)
  • Which cells are required to process and present antigens from foreign material as the initial step in the immune response?

  • Eosinophils
  • Macrophages (correct)
  • T-helper cells
  • Monocytes
  • Humoral immunity is mediated by

  • B lymphocytes (B cells). (correct)
  • neutrophils.
  • natural killer cells.
  • T lymphocytes (T cells).
  • A secondary immune response differs from the primary immune response in that

    <p>it is more rapid than the primary response and results in higher antibody levels. (A)</p> Signup and view all the answers

    Which type of immunity is provided by a vaccination?

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

    When an allergen binds with IgE antibodies on mast cells, resulting in release of chemical mediators, this reaction is called

    <p>type I hypersensitivity. (A)</p> Signup and view all the answers

    The role of memory cells is to

    <p>recognize the antigen and stimulate the immune response. (A)</p> Signup and view all the answers

    Which statement applies to contact dermatitis?

    <p>A type IV reaction occurs in affected areas. (A)</p> Signup and view all the answers

    Which of the following causes anaphylaxis?

    <p>A severe, systemic allergic reaction (C)</p> Signup and view all the answers

    Following a positive HIV antibodies blood test and ELISA test, what is the test commonly used for confirmation?

    <p>Western blot test (B)</p> Signup and view all the answers

    Incompatible blood transfusions result in

    <p>hemolysis of erythrocytes. (C)</p> Signup and view all the answers

    An autoimmune disease is

    <p>failure of the immune system to distinguish self from nonself. (D)</p> Signup and view all the answers

    Systemic lupus erythematosus is caused by

    <p>immune complex deposits of antinuclear antibodies. (B)</p> Signup and view all the answers

    Distinguishing clinical features of systemic lupus erythematosus include

    <p>inflammation in multiple organs. (B)</p> Signup and view all the answers

    Which of the following are the target cells for HIV?

    <p>Helper T lymphocytes (CD4 lymphocytes) (A)</p> Signup and view all the answers

    A diagnosis of HIV positive means that

    <p>the virus and its antibodies are present in the blood. (A)</p> Signup and view all the answers

    HIV infection impairs

    <p>both humoral and cell-mediated immunity. (C)</p> Signup and view all the answers

    Immunodeficiencies may result in an increased risk of infections by normally harmless microorganisms. These infections are referred to as

    <p>opportunistic. (D)</p> Signup and view all the answers

    Serious infections frequently occurring in patients with AIDS include

    <p>1, 2 (B)</p> Signup and view all the answers

    Which of the following statements does NOT apply to major histocompatibility complex (MHC) proteins or molecules?

    <p>All members of a family have identical MHCs. (B)</p> Signup and view all the answers

    CD4-positive helper T cells function by

    <p>facilitating all immune system activity. (C)</p> Signup and view all the answers

    Host-versus-graft disease refers to

    <p>transplant rejection by the recipient's immune system. (A)</p> Signup and view all the answers

    Which of the following complications does NOT occur frequently in AIDS patients?

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

    Which of the following characteristics apply to HIV?

    <p>2, 4 (D)</p> Signup and view all the answers

    In cases of HIV infection, the "window period" refers to the time between

    Signup and view all the answers

    Which cells process and present antigens from foreign material as the initial step in the immune response?

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

    Which of the following is mediated by B lymphocytes (B cells)?

    <p>B lymphocytes (B cells) (C)</p> Signup and view all the answers

    Study Notes

    Chapter 07: Immunity

    • Neutrophils are phagocytic cells.
    • Macrophages process and present antigens during the initial immune response.
    • B lymphocytes (B cells) mediate humoral immunity.
    • Secondary immune responses are faster and produce higher antibody levels than primary responses.
    • Active artificial immunity is acquired through vaccination.
    • Type I hypersensitivity occurs when an allergen binds to IgE antibodies on mast cells, releasing chemical mediators.
    • Systemic lupus erythematosus (SLE) is characterized by immune complex deposits of antinuclear antibodies.
    • HIV targets helper T lymphocytes (CD4 lymphocytes).
    • HIV infection impairs both humoral and cell-mediated immunity.
    • Opportunistic infections are common in AIDS patients.
    • Seroconversion is when antibodies for HIV are detected in the blood.
    • Cytokines activate and stimulate B and T lymphocytes.
    • Tolerance is the immune system's ability to ignore "self" cells.
    • Immunoglobulins (antibodies) have a unique amino acid sequence.
    • IgA is found in mucous membranes.
    • IgG is transferred from mother to the fetus across the placenta.
    • B lymphocytes mature in bone marrow.

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    Description

    Test your knowledge on Immunity Chapter 07. This quiz covers various topics such as the roles of neutrophils, macrophages, and B lymphocytes in the immune response, as well as the characteristics of hypersensitivity and HIV infection. Challenge yourself and see how well you understand immune mechanisms and disorders.

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