Which cells can function as antigen presenting cells for T helper cells? (A.) Dendritic cells and neutrophils (B.) Neutrophils and macrophages (C.) Macrophages and dendritic cells (D.) Mast cells, macrophages, and dendritic cells (E.) Mast cells and neutrophils 3. The antigens that B cells bind with their BCR are endocytosed and: (A.) Destroyed by intracellular complement proteins (B.) Displayed on the surface of the cell in MHC Class II (C.) Displayed on the surface of the cell in MHC Class I (D.) Displayed on the surface of the cell in the BCR (E.) Transported to the nucleus to regulate gene transcription 3. Which T-helper cell surface protein is critical for activation of B cells and class switch? (A.) CD40 ligand (CD40L) (B.) Cytokines (C.) BAFF (D.) IL-4 (E.) IL-2
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Step 1: The cells that can function as antigen presenting cells for T helper cells are macrophages and dendritic cells. Show more…
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Helper T (T H) cells recognize antigens when they are bound to a(n) __________. MHC II surface protein natural killer cell MHC I surface protein antibody as opposed to a primary response a secondary response is higher and faster slower and smaller higher but slower fast and smaller B cells that activate during an initial immune response but remain dormant until being activated during a second exposure to an antigen are called monocytes. T cells. cytokines. macrophages. memory cells. Which of the following cells of the immune system are capable of phagocytosis? (choose all that apply) Dendritic cells Macrophages Natural Killer Cells Helper T cells Neutrophils A decrease in which lymphocytes would decrease response from all parts of an adaptive immune response? B lymphocytes cytotoxic T cells helper T cells plasma cells
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b) Place the events in Cytotoxic T-cells in order: 1. The activated helper T cell then proliferates into more T Helper cells and memory T cells. 2. Cytotoxic T cell releases destroy the infected cell. 3. Cytotoxic T cells recognize and bind infected cells displaying non-self antigen on their MHC I. 4. Naive Helper T-cell binds MHC II molecule on an APC. 5. T Helper cells (specifically Th2) release cytokines to activate cytotoxic T cells. 6. Cytokines are secreted and activate the T Helper Cell. c) Place the events of B cell activation in order: 1. T Helper Cell (TH2) releases cytokines that activate B cell. 2. B cell phagocytoses antigen and displays it on MHC II receptor. 3. T Helper Cell (TH2) binds to antigen on MHC II on B cell surface. 4. B cell proliferates to produce plasma cells and memory B cells. 5. Plasma cells secrete antibodies. 6. Antibodies bind pathogens and are removed from the body by spleen and liver or through phagocytic cells (macrophages, neutrophils, etc).
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