On immune cells:Microphages or dendritic cellsActivation and proliferation of "naïve" B cells by specific Ag and ThMembrane-bound immunoglobulinTc recognition of antigen associated with MHC I by infected cellsActivated B cells become "dormant"On effector and function:ToThAPC (or dendritic cells)#D. selle1.2.3.41.2.3.4.5.Clonal expansion/selectionB-cell receptorMHC RestrictionMemory B cellsAntigen recognition and presentationKilling infected cellPrecursor for plasma cells.Activate effector T and B cells by recognition of the antigen and by secretion ofcytokinesProgenitor for T and B cells.

Immunity refers to the ability of an organism to resist or defend against infectious diseases and…

On immune cells: Microphages or dendritic cells Activation and proliferation of "naive" B cells by specific Ag and Th Membrane-bound immunoglobulin Tc recognition of antigen associated with MHC I by infected cells Activated B cells become "dormant" 1. 2. 3. Clonal expansion/selection B-cell receptor MHC Restriction 4. Memory B cells 5. Antigen recognition and presentation

On immune cells: Microphages or dendritic cells Activation and proliferation of "naive" B cells by specific Ag and Th Membrane-bound immunoglobulin Tc recognition of antigen associated with MHC I by infected cells Activated B cells become "dormant" 1. 2. 3. Clonal expansion/selection B-cell receptor MHC Restriction 4. Memory B cells 5. Antigen recognition and presentation

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter42: The Immune System

Section: Chapter Questions

Problem 1VCQ: Figure 42.11 Which of the following statements about T cells is false? Helper T cells release...

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Similar questions

Match the immunity concept with the best description. ___anaphylactic shock a. recognizes antigen ___immune memory b. inadequate immune response ___autoimmunity c general defense mechanism ___inflammation d. immune response against ones own body ___immune deficiency e. secondary response ___antigen receptor f. acute allergic reaction ___antigen processing g. presenting antigen together with MHC markers
Figure 42.11 Which of the following statements about T cells is false? Helper T cells release cytokines while cytotoxic T cells kill the infected cell. Helper T cells are CD4+, while cytotoxic T cells are CD8+. MHC II is a receptor found on most body cells, while MHC I is a receptor found on immune cells only. The T cell receptor is found on both CD4+ and CD8+ T cells.
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question: Helper T cells can be activated by 1.interacting with an infected cell expressing an antigen-MHC I complex. 2.interacting with a macrophage expressing an antigen-MHC II complex. 3.binding of their CD28 to B7 on antigen-presenting cells. a. 1 onlyb. 2only c. 1 and 2only d. 2 and 3only e. 1, 2 and 3
Which of the following explains why dendritic cells, but not macrophages or B cells, contribute to the activation of naive T cells? a. Macrophages and B cells do not express MHC class II molecules until they are activated. b. Dendritic cells upregulate B7 after engaging innate immunity receptors at sites of infection. c. Dendritic cells express higher levels of CTLA4. d. Macrophages and B cells do not process antigen. e. Dendritic cells use Toll-like receptors to hold antigen in place for extended periods of time.
Which of the following cell types is unable to interact with naive T cells and induce their activation? (Select all that apply.) a. B cells b. macrophages resident in infected tissues c. macrophages resident in secondary lymphoid tissue d. interdigitating reticular cells e. immature dendritic cells.
About Antigen presenting cells, it is CORRECT to affirm that: a). Macrophages, B lymphocytes and dendritic cells are APCs. meaning they express MHC-ll. b). Only APCs present MHC-11. c). Macrophages,B lymphocytes and dendritic cells are phagocytes, but not APCs.d). All the non-APC cells of our body present MHC-1.
Which of the following statements regarding intraepithelial lymphocytes is false? (Select all that apply.) a. They comprise approximately 10% of the cells in the mucosal epithelium. b. They are composed of both CD4 and CD8 T cells. c. They are separated from the lamina propria by a basement membrane. d. They are activated effector T cells with a narrow range of antigen specificities. e. They do not include NK cells. f. They express the α4:β7 integrin that binds to E-cadherin on epithelial surfaces.
The binding groove of endothelial protein C receptor (EPCR) binds to _____ and presents them to _____. a. phosphoantigens; Vγ9:Vδ2 T cells b. MIC-A or MIC-B proteins; NK cells c. sulfatides; Vγ:Vδ1 T cells d. phospholipids; Vγ4:Vδ5 T cells e. lipid antigens; Vα24–Jα18:Vβ11 NKT cells.
Unlike cytotoxic T lymphocytes, NK cells do not _____. (Select all that apply.) a. secrete cytokines b. participate in the adaptive immune response c. rearrange T-cell receptor genes d. use MHC class I molecules for their development and function e. express CD3 components.
explain in detail how a B cell gets activated (clonal selection and proliferation) How are T helper cells involved? Cytokines? Where might a B-cell most likelycome in to contact with its antigen? How did that antigen likely get there? What are memory cells?