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Chapter 8: Immunology

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The immunoglobulin class most frequently responsible for inhibition of bacteria on mucosal surfaces is:

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(A) IgG

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(B) IgM

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(C) IgA

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(D) IgE

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(E) IgD

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As part of the innate immune response, which cells participate in phagocytosis?

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(A) Macrophages and mast cells

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(B) Macrophages and plasma cells

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(C) NK cells and neutrophils

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(D) Macrophages and neutrophils

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(E) T cells and mast cells

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Which of the cytokines attract neutrophils and inhibit bacteria?

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(A) IFN-γ

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(B) IL-8

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(C) IL-2

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(D) IL-6

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(E) TGF-β

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MHC class II molecules are critically important in what immunologic process?

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(A) Antigen presentation

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(B) Phagocytosis

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(C) Immunoglobulin class switching

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(D) CD8+ T cell cytotoxicity

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(E) Opsonization

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MHC class I molecules are critically important in what immunologic process?

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(A) IgE-mediated histamine release

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(B) Phagocytosis

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(C) Immunoglobulin class switching

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(D) CD8+ T-cell cytotoxicity

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(E) Opsonization

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The host response to the interaction of a pathogen with its specific TLR generates which of the following?

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(A) IgG production

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(B) Cell activation and production of cytokines and chemokines

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(C) Immunoglobulin class switching

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(D) Phagocytosis

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(E) Presentation of pathogen to helper T cells

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Within the innate immune response, this cell acts by killing virus-infected cells:

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(A) T cell

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(B) NK cell

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(C) Macrophage

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(D) Neutrophil

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