antibodies b natural killer cells memoy eB cells Four of the five answers listed
ID: 3523442 • Letter: A
Question
antibodies b natural killer cells memoy eB cells Four of the five answers listed below are targets of the immune system. Select the c cancer cells b. normal cells d bacteria e. debris and dead cells Which cells directly destroy body cells infected by vial or fungal parasites? b, natural killer cells helperT c. cytotoxic T ?.? 2 Cell-mediated response a, involves helper T cells b. involves the action of antibodies to destroy invaders c. acts only on extracellular clues. d. results in the production of clones of plasma cells e. all of these 43 The main antigen-presenting cells in the body are b. fibroblasts c. helper T cellsd. macrophages 44. Before a B lymphocyte can secrete antibodies it must transform into a. a stem cells b. a plasma cel c. an antigen-presenting cell d.aT cell 45. When the body's defenses turn against its own cells, the disorder is called b. anaphylactic shock. a, an autoimmune response. e. an inflammatory response membrane red immune deficiency syndrome d. passive immunity 46. The function of an antigen-presenting cell depends on the presence of on its plasm a. IgG b. interleukin-2 c. helper factors d. MHC proteins The antigen-binding sites of an antibody molecule are found a. on the light chains only c. at the tips of the constant regions 47. b. on the heavy chains only. d. at the tips of the variable regions are small organic molecules that are not antigenic by themselves, but can combi with proteins and render them antigenic. a. Light chains b. Helper factors c. Pyrogens d. Haptens 48. When an antigen triggers the multiplication of B lymphocytes, some daughter cells transform into antibody-producing cells and mount an attack, while others become a. natural killer cells b. memory cells. c. plasma cells d. helper cells. 49. T cells become immunocompetent during their stay in a. the spleen. 50. b. the yolk sac c. the thymus d. the lymph nodes.Explanation / Answer
39. e) B-cells
40. e) debris and dead cells
41. c) cytotoxic T cells
42. a) Involves T helper cells
43. d) Macrophages
44. b) a Plasma cell
45. a) An Auto Immune response
46. d) MHC proteins
47.
48. d) Haptens
49. b) Memory cells
50. c) The Thymus
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