front 1 What type of immunity results from vaccination? | back 1 artificially acquired active immunity |
front 2 What type of immunity results from transfer of antibodies from one individual to a susceptible individual by means of injection? | back 2 artificially acquired passive immunity |
front 3 What type of immunity results from recovery from mumps? | back 3 naturally acquired active immunity |
front 4 Which of the following is the best definition of epitope? | back 4 specific regions on antigens that interact with antibodies |
front 5 Newborns' immunity due to the transfer of antibodies across the placenta is an example of | back 5 naturally acquired passive immunity. |
front 6 Which of the following statements is NOT a possible outcome of antigen-antibody reaction? | back 6 clonal deletion |
front 7 Which of the following cells is NOT an APC? | back 7 natural killer cells |
front 8 When an antibody binds to a toxin, the resulting action is referred to as | back 8 neutralization. |
front 9 CD4+ T cells are activated by | back 9 interaction between CD4+ and MHC II. |
front 10 Which of the following recognizes antigens displayed on host cells with MHC II? | back 10 TH cell |
front 11 The specificity of an antibody is due to | back 11 the variable portions of the H and L chains. |
front 12 Which of the following is NOT a characteristic of B cells? | back 12 They recognize antigens associated with MHC I. |
front 13 Which of the following is NOT a characteristic of cellular immunity? | back 13 B cells make antibodies. |
front 14 Plasma cells are activated by a(n) | back 14 antigen. |
front 15 The antibodies found in mucus, saliva, and tears are | back 15 IgA. |
front 16 The antibodies found almost entirely and only on the surface of B cells (not secreted from them), and which always exist as monomers, are | back 16 IgD. |
front 17 The antibodies that typically bind to large parasites are | back 17 IgE |
front 18 In addition to IgG, the antibodies that can fix complement are | back 18 IgM |
front 19 Large antibodies that agglutinate antigens are | back 19 IgM. |
front 20 The most abundant class of antibodies in serum is | back 20 IgG. |
front 21 In Figure 17.1, which letter on the graph indicates the patient's
secondary response to a repeated exposure with the identical
antigen? | back 21 c |
front 22 In Figure 17.1, which letter on the graph indicates the highest antibody titer during the patient's response to a second and distinct/different antigen? | back 22 e |
front 23 In Figure 17.1, the arrow at time (d) indicates | back 23 exposure to a new antigen. |
front 24 Which of the following statements is FALSE? | back 24 The constant region of a heavy chain is the same for all antibodies. |
front 25 Which of the following is the best definition of antigen? | back 25 a chemical that elicits an antibody response and can combine with these antibodies |
front 26 Which of the following are NOT lymphocytes? | back 26 M cells |
front 27 The following events elicit an antibody response. What is the third step? | back 27 TH cell recognizes antigen-digest and MHC II. |
front 28 In Figure 17.2, which areas are similar for all IgG antibodies? | back 28 c and d |
front 29 In Figure 17.2, which areas are different for all IgM antibodies? | back 29 a and b |
front 30 In Figure 17.2, which areas represent antigen-binding sites? | back 30 a and b |
front 31 In Figure 17.2, what portion will typically attach to a host cell? | back 31 e |
front 32 Which of the following bacterial components would most likely result in B cell stimulation by T-independent antigens? | back 32 capsule |
front 33 The presence of which of the following indicates a current infection rather than a previous infection or vaccination? | back 33 IgM |
front 34 Which of the following destroys virus-infected cells? | back 34 CTL |
front 35 The following events occur in cellular immunity, leading to a response from TH cells. What is the third step? | back 35 TH cells proliferate. |
front 36 Cytokines released by TH1 cells | back 36 activate CD8+ cells to CTLs |
front 37 Which one of the following causes transmembrane channels in target cells? | back 37 perforin |
front 38 At a minimum, the human immune system is capable of recognizing approximately how many different antigens? | back 38 1015 |
front 39 Thymic selection | back 39 destroys T cells that do not recognize self-molecules of MHC. |
front 40 Which of the following statements about natural killer cells is FALSE? | back 40 They are stimulated by an antigen. |
front 41 An antibody's Fc region can be bound by | back 41 macrophages. |
front 42 A Treg cell deficiency could result in | back 42 autoimmunity. |
front 43 ADCC is a process that is most effective in destroying | back 43 eukaryotic pathogens. |
front 44 IL-2, produced by TH cells, | back 44 stimulates TH cell maturation. |
front 45 NK cells do all of the following EXCEPT | back 45 become activated by TH-2 cells. |
front 46 Which terms regarding components of adaptive immunity are mismatched? | back 46 TH cells - MHCI interaction. |
front 47 Which of the following statements about cytokines is FALSE? | back 47 There are 10 types. |
front 48 A cell undergoing apoptosis | back 48 is employed as an infection-fighting mechanism. |
front 49 The importance of M cells concerns | back 49 facilitation of contact between antigens in the intestinal tract and the immune system. |
front 50 Which of the following terms regarding roles of chemical messengers is mismatched? | back 50 tumor necrosis factor - stimulate tumor metastasis |