72) Antigen presentation by a Dendritic cell or macrophage causes
A) fever
B) clonal selection
C) a drop in antibody production
D) a dangerous drop in blood pressure
E) The end of The World
A= True B=False
74) Following a second exposure the antibody titre is 1000X higher than the first exposure
75) The response seen is due to toll-like receptors and not memory cells
76) "B" antibodies will be found at high titre following a second exposure to B antigen
Toll like receptors and innate immunity
A) TLR 4 B) TLR 5 C) TLR 9 D) TLR 3
77) Binds viral RNA
78) Binds viral DNA
79) Binds bacterial Flagellin
80) Binds bacterial lipopolysaccharide
72. Antigen presentation (by a dendritic cell or macrophage) is important for triggering the immune response of the body during an infection. It causes B) clonal selection, which then leads to an increase in a diverse antibody population that combats the infection.
74. True. The antibody titre is 1000x higher in the second exposure.
75. False. Though toll-like receptors do help in recognizing the pathogenic molecules, it is the memory cells that are responsible for remembering the first exposure and producing a better response on the second exposure.
76. True. Same reason as 74.
The following do not require an explanation and have only been matched.
77. Binds viral RNA - TLR 3 (D)
78. Binds viral DNA - TLR 9 (C)
79. Binds bacterial Flagellin - TLR 5 (B)
80. Binds bacterial lipopolysaccharide - TLR 4 (A)
72) Antigen presentation by a Dendritic cell or macrophage causes A) fever B) clonal selection C)...
Produces antibodies; an activated B cell Related to T cells but show no antigen specificity; active against cancer and viral infections Reside throughout the RES; process and present foreign matter to lymphocytes Participate in cell-mediated immunity; modulate immune functions Nonmotile; bound to connective tissue; trigger local inflammatory reactions Small; second most common white blood cell; two types Scarcest type; function in inflammation and allergies; attract white blood cells toward site of infection Mature in bone marrow; part of memory; humoral...
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