front 1 A "nonself" substance that can provoke an immune response is called a(n) __________. a)colony-stimulating factor b)antibody c)immunoglobulin d)antigen e)interferon | back 1 d |
front 2 Active artificially acquired immunity is a result of __________. a)contact with a pathogen b)injection of an immune serum c)antibodies passed on from mother to fetus through the placenta d) vaccination e)antibodies passed on from mother to baby through breast milk | back 2 d |
front 3 Complement proteins work by __________. a)forming pores in the membranes of target cells b)creating an impermeable barrier c)phagocytosis of target cells d)producing antibodies e)neutralization of antigens | back 3 a |
front 4 Cytotoxic T cells kill target cells __________. a)through insertion of perforins into the target's membrane b)through injection of tumor necrosis factor c)by releasing oxidizing agents d)by secreting antibodies e) by phagocytosis | back 4 a |
front 5 Lymphocytes that develop immunocompetence in the thymus are __________. a)B lymphocytes b)T lymphocytes c)NK cells | back 5 b |
front 6 Saliva and lacrimal fluids contain this enzyme that destroys bacteria. a)trypsin b)reverse transcriptase c) lysozyme d)amylase e) pepsin | back 6 c |
front 7 This immune cell is able to respond quickly after any subsequent encounter with the same antigen. a)antigen-presenting cell b)helper T cell c)basophil d)plasma cell e)memory cell | back 7 e |
front 8 These molecules are secreted by leukocytes and macrophages and result in a fever. a)pyrogens b)keratin c)antibodies d)histamine e) heparin | back 8 a |
front 9 This type of disease results from the inability of the immune system to distinguish self- from nonself-antigens. a)SCID b)allergy c)autoimmune disease d)immunodeficiency e)anaphylaxis | back 9 c |
front 10 When a localized area exhibits increased capillary filtration, hyperemia, and swelling, it is an indication that __________. a)an immune response is underway b)inflammation is occurring c)antigens are present d)antibodies are phagocytizing target cells e)fever is developing | back 10 b |
front 11 Which cell does NOT have a direct role in phagocytosis? a)Kupffer cell b)eosinophil c)NK cells d)neutrophil e)macrophage | back 11 c |
front 12 Which cells stimulate both arms of the immune response? a)complement cells b)basophils c)killer T cells d)helper T cells e)plasma cells | back 12 d |
front 13 Which nonspecific defense cells specialize in attacking cancer cells and virus-infected cells? a)plasma cells b)macrophages c)natural killer cells d)basophils e)helper T lymphocytes | back 13 c |
front 14 Which of the following is a nonspecific barrier defense? a)mucous membranes b)natural killer cells c)complements d)antibodies e)macrophages | back 14 a |
front 15 Which statement below is characteristic of a secondary humoral response? | back 15 e |
front 16 Which type of molecule is produced by virus-infected cells to communicate to noninfected cells the presence of a virus? a)complement b)pyrogen c)antigen d)interferon e)interleukin | back 16 d |
front 17 Which of the following is NOT a surface barrier to pathogen influx? a)saliva and tears b)complement cascade c)skin secretions d)mucous membranes | back 17 b |
front 18 Which of the following is NOT one of the cardinal signs of inflammation? a)redness b)pain c)heat d)swelling e)opsonization | back 18 e |
front 19 The process that begins when a helper T cell binds to a class II MHC protein on a displaying cell is known as __________. a)antigen proliferation b)T cell proliferation c)costimulation d)self-antigen recognition | back 19 d |
front 20 All of the following are examples of autoimmune disorders, EXCEPT __________. a)sickle-cell anemia b)myasthenia gravis c)Graves disease d)rheumatoid arthritis e)systemic lupus erythematosus (SLE) | back 20 a |
front 21 Which of the following is NOT an innate defense mechanism of the body? a)skin b)fever c)B lymphocytes d)inflammation | back 21 c |
front 22 Which of the following steps is the first step in an inflammatory response? a)release of leukocytosis-inducing factor b)adhesion of the neutrophil's cell-adhesion molecules to antigen c)diapedesis d)positive chemotaxis | back 22 a |
front 23 In the respiratory burst, __________ are released, which have a potent cell-killing ability. a) neutrophils b)free radicals c)histamines d)platelet-derived growth factors | back 23 b |
front 24 Leukotrienes cause __________. a)dilation of the small blood vessels in an injured area b)apoptosis of cells c)neutrophils to migrate to an area of inflammation d)the release of digestive enzymes outside the cell | back 24 a |
front 25 Toll-like receptors are found on __________. a)lymphocytes b)mast cells c)neutrophils d)macrophages | back 25 d |
front 26 Interferons can be used to treat all of the following, EXCEPT __________. a)muscular dystrophy b)cancer c)hepatitis C d)viral infections | back 26 a |
front 27 All of the following are functions of interferons, EXCEPT that __________. a)they only occur naturally b)they interfere with viral replication in affected cells c)they mobilize natural killer cells d)they are not virus-specific | back 27 a |
front 28 Which of the following minerals needed for bacterial reproduction do both the liver and spleen sequester during a fever? a)phosphorous b)zinc c)magnesium d)copper | back 28 b |
front 29 Which hypersensitivity is caused by T lymphocytes? a)delayed b)chronic | back 29 a |
front 30 Without __________ there is no adaptive immune response. a)B lymphocytes b)plasma cells c)T lymphocytes d)antibodies | back 30 c |