Chapter Questions
___________ trigger immune responses.a. Cytokinesb. Lysozymesc. Antibodiesd. Antigense. Histaminesf. all of the above
Which of the following is not among the first line of defenses against infection?a. skinb. acidic gastric fluidc. lysozyme in salivad. resident bacterial populationse. complement activationf. flushing action of diarrhea
Which of the following is not considered to be part of an innate immune response?a. phagocytic cellsb. feverc. histaminesd. cytokinese. inflammationf. complement activationg. presenting antigenh. all take part
Which of the following is not considered to be part of an innate immune response?a. phagocytic cellsb. antigen-presenting cellsc. histaminesd. cytokinese. antigen receptorsf. complement activationg. antibodiesh. all take part
Activated complement proteins ________.a. form attack complexesb. promote inflammationc. attract phagocytic cellsd. all of the above
Name a defining characteristic of innate immunity.
Antibodies are ___________.a. antigen receptorsb. made only by B cellsc. proteinsd. all of the above
A dendritic cell engulfs a bacterium, then presents bacterial bits on its surface along with a(n) __________.a. MHC markerb. antibodyc. $\mathrm{T}$ cell receptord. antigen
Antibody-mediated responses are most effective against ____________.a. intracellular pathogensb. extracellular pathogensc. cancerous cellsd. both a and be. both b and cf . $a, b,$ and $c$
Cell-mediated responses are most effective against ___________.a. intracellular pathogensb. extracellular pathogensc. cancerous cellsd. both a and be. both a and $c$f. $a, b,$ and $c$
Allergies occur when the body responds to __________.a. pathogensb. toxinsc. normally harmless substancesd. all of the above
Name a defining characteristic of adaptive immunity.
___________ are targets of cytotoxic T cells.a. Extracellular virus particles in bloodb. Virus-infected body cells or tumor cellsc. Parasitic worms in the liverd. Bacterial cells in puse. Pollen grains in nasal mucus
Which combination of the following types of antibodies and immune cells is central to hay fever?a. IgE and mast cellsb. IgG and basophilsc. IgA and lymphocytesd. IgM and macrophages
Match the immune cell with the function._____dendritic cell_____B cell_____helper T cell _____NK cell_____cytotoxic T cella. kills virus-infected cellsb. antigen-presenterc. activates other lymphocytesd. kills cells lacking MHC markerse. makes antibodies
Match the immunity concept with the best description._____anaphylactic shock _____immune memory _____autoimmunity _____inflammation _____immune deficiency _____antigen receptor _____antigen processinga. recognizes antigenb. inadequate immune responsec. general defense mechanismd. immune response against one's own bodye. secondary responsef. systemic allergic reactiong. presenting antigen together with MHC molecules