Micro Ch.15 Learnsmart

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Author:
astoddard
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305864
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Micro Ch.15 Learnsmart
Updated:
2015-07-30 08:21:03
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Micro
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Learnsmart Ch.15
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  1. __________ provide the protective benefit in antitoxins, while __________ are a part of pathogen that can induce antitoxins to be formed by our immune responses.
    Antibodies        Antigens
  2. B lymphocytes are responsible for

    humoral immunity
    cell mediated immunity
    antibody production
    becoming plasma cells following activatin and differentiation
    becomingmacrophages following activation and differentiation
    • humoral immunity
    • cell mediated immunity
    • antibody production
    • becoming plasma cells following activatin and differentiation
    • becomingmacrophages following activation and differentiation
  3. The classification for cells that present antigenic peptides to helper T cells via MHC Class II molecules is

    epithelial cells
    antigen-presenting cells
    neutrophils
    hematopoietic stem cells
    • epithelial cells
    • antigen-presenting cells
    • neutrophils
    • hematopoietic stem cells
  4. Traits for primary responses include:
    • Slow to develop, taking 10-14 days
    • usually IgM in nature
    • initially lacks affinity maturation
    • initially lacks class switching
  5. Traits to secondary responses include:
    • faster to develop due to performed memory cells
    • usually NOT IgM in nature
    • strong levels of affinity maturation already in place
    • class switching has already taken place
  6. The CD4 molecule is:

    a protein molecule
    a lipid molecule
    a molecule that can identify a cytotoxic T Cell
    a cluster of differentiation molecule
    a molecule that can identify a helper T cell
    a cytotoxic destruction molecule
    • a protein molecule
    • a lipid molecule
    • a molecule that can identify a cytotoxic T Cell
    • a cluster of differentiation molecule
    • a molecule that can identify a helper T cell
    • a cytotoxic destruction molecule
  7. The primary item carried in lymph during an infection that stimulates a response from B and T cells is ___________.
    antigen
  8. MHC Class 1 molecules
    present only endogenous antigens
  9. Match the variable (v), diversity (D), and joining (J) segments with their correct number in a human hematopoietic stem cells DNA

    Variable              25
    Diversity             6
    Joining                40
    • Variable = 40
    • Diversity = 25
    • Joining = 6
  10. When a helper T cell recognizes a peptide presented to it by a B cell or macrophage, it delivers ________ that activate the cell.
    cytokines
  11. T cell activation order:
    T cell activated by interaction with an antigen-presenting dendritic cell

    Proliferation

    Differentiation into armed effector T cells

    Migration to the site of infection
  12. A third type T cell group that has recently been described are the ____________ T cells.
    regulatory

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