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Immunology Questions

Explore questions in the Immunology category that you can ask Spark.E!

43) ADCC is a process that is most effective in destroyingA) eukaryotic pathogens.B) virus-infected host cells.C) extracellular viruses. D) bacterial pathogens.E) bacterial toxins.

33) The presence of which of the following indicates a current infection rather than a previous infection or vaccination?A) IgAB) IgGC) IgMD) IgDE) IgE

32) Which of the following bacterial components would most likely result in B cell stimulation by T-independent antigens?A) capsuleB) flagellumC) piliD) ribosomeE) plasmid

44) IL-2, produced by TH cells,A) activates macrophages.B) stimulates TH cell maturation.C) causes phagocytosis.D) activates antigen-presenting cells.E) activates TC cells to CTLs.

35) The following events occur in cellular immunity. What is the third step?A) Antibodies are produced.B) Dendritic cell takes up antigen.C) Antigen enters M cell.D) TH cell produces cytokines.E) TH cells proliferate.

7) Plasma cells will eventually differentiate into memory cells.

8) Memory cells do not require B cell receptors.

Figure 17.1 21) In Figure 17.1, which letter on the graph indicates the patient's secondary response to an antigen?A) aB) bC) cD) dE) e

39) Thymic selectionA) destroys T cells that do not recognize self-molecules of MHC.B) destroys B cells that make antibodies against self.C) destroys MHC molecules.D) destroys CD4+ cells that attack self.E) activates B cells.

37) Which one of the following causes transmembrane channels in target cells?A) granzymesB) haptenC) IL-1D) IL-2E) perforin

45) Which of the following statements about IL-12 is FALSE?A) It activates macrophages.B) It inhibits some tumor cells.C) It activates the TH1 pathway.D) It causes autoimmune diseases.E) It causes TH cells to respond to HIV.

40) Which of the following statements about natural killer cells is FALSE?A) They destroy virus-infected cells.B) They destroy tumor cells.C) They destroy cells lacking MHC I.D) They are stimulated by an antigen.E) None of the answers are correct; all of these statements are true.

19) Large antibodies that agglutinate antigens areA) IgG.B) IgM.C) IgA.D) IgD.E) IgE.

23) In Figure 17.1, the arrow at time (c) indicatesA) the time of exposure to the same antigen as at time (a).B) the secondary response.C) the primary response.D) exposure to a new antigen.E) the T-cell response.

25) Which of the following is the best definition of antigen?A) something foreign in the bodyB) a chemical that elicits an antibody response and can combine with these antibodiesC) a chemical that combines with antibodiesD) a pathogenE) a protein that combines with antibodies

16) The antibodies found on the surface of B cells, and which always exist as monomers, areA) IgG.B) IgM.C) IgA.D) IgD.E) IgE.

Figure 17.2 28) In Figure 17.2, which areas are similar for all IgG antibodies?A) a and bB) a and cC) b and cD) c and dE) b and d

20) The most abundant class of antibodies in serum isA) IgG.B) IgM.C) IgA.D) IgD.E) IgE.

36) Cytokines released by TH1 cellsA) activate CD8+ cells to CTLs.B) convert TH1 cells to TH2 cells.C) convert TH2 cells to TH1 cells.D) kill parasites.E) convert B cells to T cells.

29) In Figure 17.2, which areas are different for all IgM antibodies?A) a and bB) a and cC) b and cD) c and d

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