Please answer asap and type your answer and do not copy from anywhere After a naive B cell encounters aantigen fragments on1and binds an antigen with its_2it engulfs and degrades the pathogen, and then displays4.binds the displayed Ag with its5and also binds the B cell's MHC IlI with itsprotein (steps 1a and 1b, respectively).6A third cell-cell connection occurs with the B cell's7.binding the T cell's_8_(step 2).Under the influence of specific cytokines, such asof cells,pathogens.9.from the T cell, the B cell beginsand then developing into two populationsthat can bind specific antigens on the1011 for responses to subsequent infections and12 which secrete13free pathogenChoose.3.V CD40MHC II4.plasma cells5proliferatingTH2 cellfree pathogenTCrIL-4 and IL-68.CD4antibodies9.CD4OL10memory B cellsBCr11,12Choose.

Immune cells are of two types: B -cells and T-cells. The B-cells which has never encounter any…

After a naive B cell encounters a 1 and binds an antigen with its2 it enguifs and degrades the pathogen, and then displays antigen fragments on binds the displayed Ag with its 5 A third cell-cell connection occurs with the B cell's7_binding the T cell's8 A 4 and also binds the B cell's MHC II with its 6 protein (steps ta and 1b, respectively). (step 2). Under the influence of specific cytokines, such as of cells,11_ for responses to subsequent infections and_12 which secrete pathogens. from the T cell, the B cell begins 10 and then developing into two populations that can bind specific antigens on the 13 free pathogen 2 Choose. 3. V CD40 MHC II 4. plasma cells 5, proliferating TH2 cell 6. free pathogen IL-4 and IL-6 8. CD4 antibodies CD4OL. 10 memory B cells 11 BCr 12 Choose..

After a naive B cell encounters a 1 and binds an antigen with its2 it enguifs and degrades the pathogen, and then displays antigen fragments on binds the displayed Ag with its 5 A third cell-cell connection occurs with the B cell's7_binding the T cell's8 A 4 and also binds the B cell's MHC II with its 6 protein (steps ta and 1b, respectively). (step 2). Under the influence of specific cytokines, such as of cells,11_ for responses to subsequent infections and_12 which secrete pathogens. from the T cell, the B cell begins 10 and then developing into two populations that can bind specific antigens on the 13 free pathogen 2 Choose. 3. V CD40 MHC II 4. plasma cells 5, proliferating TH2 cell 6. free pathogen IL-4 and IL-6 8. CD4 antibodies CD4OL. 10 memory B cells 11 BCr 12 Choose..

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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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 of the following is NOT a involved in the CD8-T-cell killing of viral-infected cells? Select one: a. Recognition of the MHC Class I and viral-derived peptide on the surface of the target cell Ob. Reorientation of the intracellular cytoskeleton to move the cytotoxic granules toward the SMAC c. Release of perforin and granzymes onto the infected target cell Od. Induction of apoptosis in the target cell by cleaving the nuclear DNA. e. Costimulation of CD8-T-cells with CD28/B7
DRAW IT Sketch a B cell antigen receptor. Label the Vand C regions of the light and heavy chains. Label theantigen-binding sites, disulfide bridges, and transmembrane region. Where are these features located relativeto the V and C regions?
Which of the following statements about innate lymphoid cells is true? (ONE ANSWER) Require the transcription factor IL-7 for development and express MHC-II Require the transcription factor ID2 for development and produce different cytokines depending on the ILC subset (ILC1, ILC2, or ILC3) Are considered part of the adaptive immune system Express lymphocyte antigen receptors that require V(D)J recombination Are derived from common innate progenitor (CIG) cells
All of the following are characteristic of regulatory T cells except a. they express CD25 b. they facilitate the proliferation of naive T cells interacting with the same antigen-presenting cell c. they express CD4 d. they express the transcriptional repressor FoxP3 e. they express MHC class II-restricted T-cell receptors specific for self antigen.
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
Helper T cells can be activated by macrophages(which engulf everything indiscriminately) or by B cells (which only engulf antigens that stick to their receptors). A. What properties so macrophages and B cells have ibn common that allows them both to activate T cells? B. It has been suggested that macrophages probably do most to fhte T cell activating in the primary response but B cells do most of it in the secondary response. Why does this make sense?
Which of the following is not associated with killing by a cytotoxic T cell? View Available Hint(s) for Part A granzyme CD95 perforin IL-4
The following events occur in humoral immunity, leading to an activated B cell in a T dependent manner. Of the steps listed below, which would be step number 5 in the process. Hint: only include these steps in the numbering...order the steps and select which one is #5 A. secretion of cytokines by Th B. Receptor mediated endocytosis C. B cell receptors recognize and bind to an antigen D. Recognition by Th E. Digestion and processing of the antigen by the B cell F. Display of the antigen along with MHC proteins
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.
A naive T cell is migrating from the blood into a lymph node and first rolls along high endothelial venules of the lymph node. Which of the following is expressed by the T cell to facilitate the rolling process? A. C3a B. CD4 C. ICAM-1 D. lgM E. L-selectin