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Chapter 8: Immunology

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

(A) IgG

(B) IgM

(C) IgA

(D) IgE

(E) IgD

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

(A) Macrophages and mast cells

(B) Macrophages and plasma cells

(C) NK cells and neutrophils

(D) Macrophages and neutrophils

(E) T cells and mast cells

Which of the cytokines attract neutrophils and inhibit bacteria?

(A) IFN-γ

(B) IL-8

(C) IL-2

(D) IL-6

(E) TGF-β

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

(A) Antigen presentation

(B) Phagocytosis

(C) Immunoglobulin class switching

(D) CD8+ T cell cytotoxicity

(E) Opsonization

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

(A) IgE-mediated histamine release

(B) Phagocytosis

(C) Immunoglobulin class switching

(D) CD8+ T-cell cytotoxicity

(E) Opsonization

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

(A) IgG production

(B) Cell activation and production of cytokines and chemokines

(C) Immunoglobulin class switching

(D) Phagocytosis

(E) Presentation of pathogen to helper T cells

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

(A) T cell

(B) NK cell

(C) Macrophage

(D) Neutrophil

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