Chapter Questions
_____ is/are the first line of defense against threats.a. Skin, mucous membranesb. Tears, saliva, gastric fluidc. Urine flowd. Resident bacteriae. a throughf. all of the above
Complement proteins _____.a. form pore complexesb. promote inflammationc. neutralize toxinsd. a and b
_____ trigger immune responses.a. Cytokinesb. Lysozymesc. Immunoglobulinsd. Antigense. Histaminesf. all of the above
Name one defining characteristic of innate immunity.
Name one defining characteristic of adaptive immunity.
Antibodies are _____.a. antigen receptorsb. made only by $\mathrm{B}$ cellsc. proteinsd. all of the above
______ binding antigen triggers allergic responses.a. IgAb. IgEc. $\lg G$d. IgMe. IgD
Antibody-mediated responses work against _____.a. intracellular pathogensb. extracellular pathogensc. cancerous cellsd. both a and be. both b and c$f . a, b,$ and $c$
Cell-mediated responses work against _____.a. intracellular pathogensb. extracellular pathogensc. cancerous cellsd. both a and be. both a and $c$$f, a, b,$ and $c$
_____ are targets of cytotoxic T cells.a. Extracellular virus particles in bloodb. Virus-infected body cells or tumor cellsc. Parasitic flukes in the liverd. Bacterial cells in puse. Pollen grains in nasal mucus
Allergies occur when the body responds to _____.a. pathogensb. normally harmless substancesc. toxinsd. all of the above
Match the immunity concepts.a. neutrophilb. effector $B$ cellc. general defensed. immune response against own bodye. secondary responsef. $\mathrm{B}$ cell receptorg. hypersensitivity to an allergenanaphylactic shock _____antibody secretion _____phagocyte _____immune memory _____autoimmunity _____antigen receptor _____inflammation _____