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Name: 23 Helper T-cells are fully activated when their T-cell receptors bind
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Description: 23 Helper T-cells are fully activated when their T-cell receptors bind toand their CD4 receptors bind toAntigen; MHC-II.Antigen; MHC-I.MHC-I; Antigen.MHC-II; Antigen.

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Helper T-cells are fully activated when their T-cell receptors bind to and their CD4 receptors bind to O Antigen; MHC-II. Antigen; MHC-I. MHC-I; Antigen. MHC-II; Antigen.

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter34: Immunity

Section: Chapter Questions

Problem 4SA

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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.
Match the immune cell with its main function. ___dendritic cell a. professional phagocyte ___B cell b. antigen-presenter ___helper T cell c. activates other lymphocytes ___NK cell d. makes antibodies ___macrophage e. kills ailing body cells that lack MHC markers
Which innate immune system component uses MHC class I molecules directly in its defense Strategy? a. macrophages b. neutrophils c. NK cells d. interferon
Which of the following is not a part of innate immunity? a. phagocytic cells e. inflammation b. fever f. complement activation c. histamines g. presenting antigen d. cytokines h. all take part
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
Which two events are required to activate a cytotoxic T cell? There is more than one answer. O Class II MHC molecules present extracellular antigen for binding on a complementary cytotoxic T cell receptor. O IL-4 is released by a TH1 cell to be bound by a cytotoxic T cell. O Class I MHC molecules presents intracellular antigen for binding on a complementary cytotoxic T cell receptor O IL-2 is released by a TH1 cell to be bound by a cytotoxic T cell.
Which of the following statements are NOT TRUE about Antigen Presenting Cells (APCs)? (Select all that apply) An APC can become activated from antigen binding as well as MHC binding APCs can carry mutliple MHCs Antigen presenting is due to APC activation Adaptive, innate, and non-immune cells can be APCs APCs travel to the sites of resident macrophages to recruit effector immune cells An APC that binds via their expressed MHC II will be killed
that causes the rapid reproduction of a specific ( Select] [ Select ] Antigenic cell B cell I cell Macrophage Eosinophil Vaccines work by stimulating a(n) [Select ] that produces an antibody that is specific for the antigen in the vaccine. This creates a pool of memory cells that will be available if the person is ever infect nicrobe.
The following events elicit an antibody response to a T-dependent antigen (Ag). Put them in order and indicate which one would happen third (of the five answers as shown, not necessarily number 3 on a lecture slide or text diagram). O Ag-presenting cell displays Ag fragments next to self (MHC) molecule on its surface Helper T cell (TH) activates an appropriate B cell Helper T cell (TH) specific for the Ag binds to MHC-Ag complex B cell differentiates into a plasma cell; secretes antibodies specific for the Ag Ag-presenting cell phagocytizes Ag-carrying microbe
What co-receptor do Helper T cells use? MHC2 CDK1 CD4 O CD8
What happens when a helper T cell is activated? Multiple Choice Two populations of cells are formed: memory T cells and effector TH cells, the effector TH cells play a role in activating B cells. Two populations of cells are formed: effector TH cells and effector TC cells; these work together to activate B cells and macrophages. Activated TH cells produce cytokines that stimulate dendritic cells, converting them into antigen-presenting cells. Two populations of cells are formed: helper T cells and cytotoxic T cells; the TH cells activate B cells and the TC cells target virus-infected cells. Two populations of cells are formed: memory TH cells and effector TH cells; the effector TH cells produce a variety of
True or False Can cytotoxic T cells have the ability to identify class 1 MHCs or do they recognize the antigen? B cells are what cause cellular immunity?