Chapter 34

________trigger \((s)\) immune responses. a. Cytokines b. Lysozyme c. Antibodies d. Antigens e. Histamines f. MHC markers

Which of the following is not a surface barrier to infection? a. skin b. acidic gastric fluid c. lysozyme in saliva d. resident bacterial populations e. complement activation f. flushing action of diarrhea

Which of the following is not part of innate immunity? a. phagocytic cells b. fever c. histamines d. cytokines e. inflammation f. complement activation g. presenting antigen h. all take part

Which does not take part in adaptive immunity? a. phagocytic cells b. antigen-presenting cells c. MHC markers d. cytokines e. antigen receptors f. complement activation g. antibodies h. all take part

Activated complement proteins________. a. puncture cells b. promote inflammation c. attract macrophages d. all of the above

Choose the defining characteristics of innate immunity. a. self/nonself recognition b. immediate response c. set of general defenses d. antigen memory e. diverse antigen receptors f. fixed number of PAMPs g. tailored for specific antigens

Choose the defining characteristics of adaptive immunity. a. self/nonself recognition b. immediate response c. set of general defenses d. antigen memory e. diverse antigen receptors f. fixed number of PAMPs g. tailored for specific antigens

Antibodies are________. a. antigen receptors b. made only by B cells c. proteins d. all of the above

A dendritic cell engulfs a bacterium, then presents bacterial bits on its surface along with a(n)________. a. MHC marker b. antibody c. T cell receptor d. antigen

Antibody-mediated responses are most effective against________. a. intracellular pathogens b. extracellular pathogens c. cancerous cells d. a and \(c\)

Cell-mediated responses are most effective against ________. a. intracellular pathogens b. extracellular pathogens c. cancerous cells d. a and \(c\)

________are targets of cytotoxic T cells. a. Extracellular virus particles in blood b. Virus-infected body cells or tumor cells c. Parasitic worms in the liver d. Bacterial cells in pus e. 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 cells b. IgG and basophils c. IgA and lymphocytes d. IgM and macrophages

Match the immune cell with its main function. dendritic cell B cell helper T cell NK cell macrophage a. professional phagocyte b. antigen-presenter c. activates other lymphocytes d. makes antibodies e. kills ailing body cells that lack MHC markers

Allergies occur when the immune system responds to________. a. pathogens b. toxins c. normally harmless substances d. all of the above

Match the immunity concept with the best description. ________anaphylactic shock ________immune memory ________autoimmunity ________inflammation ________immune deficiency ________antigen receptor ________antigen processing a. recognizes antigen b. inadequate immune response c. general defense mechanism d. immune response against one's own body e. secondary response E acute allergic reaction g. presenting antigen together with MHC markers