Question 3 Select one answer. T cells come in several varieties. Cytotoxic T cells are important because they can become activated and kill target cells. Which of the following are not needed directly for Cytotoxic T cell activation? a. Cytokines b. Interferons c. Complement d. Antibodies e. All are correct

Question 3 Select one answer. T cells come in several varieties. Cytotoxic T cells are important because they can become activated and kill target cells. Which of the following are not needed directly for Cytotoxic T cell activation? a. Cytokines b. Interferons c. Complement d. Antibodies e. All are correct

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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Question 1: Select one answer.Sometimes the immune system appears to get confused and it starts mount an immune response against the the body's own tissues. What is this referred to as?a. Lymphomab. Lymphedemac. Autoimmune diseased. Graft-versus-host disease Question 2: Select one answer.One of the results of the inflammatory response is accumulation of fluid in the affected area (edema). This happens in response to tissue injury such as a sprained ankle or an infection caused by a splinter in one’s finger. Select the correct statement from the choices below. a. Activation of the inflammatory response does not indicate a disruption of homeostasis. Presence of extra fluid in the tissues directly activates the innate immune response. b.The lymph vessels will eventually drain away the excess fluid. The kinin-kallikrein system causes capillary leakage resulting in edema. c. The lymph vessels will bring in the cells from the immune system to fight any potential infection. d. Tissue edema…
Some individuals with immunodeficiency have mutations in the digesting enzymes of their macrophages. What impact might this have on their immune systems? Question 8 options: The adaptive immune response may no longer be activated. Macrophage will no longer recognize the PAMPs with their TLRs. Macrophages will not release cytokines upon tissue damage. MHC receptors will present antigens on the surface of the macrophages.
Question:- Which of the following statements concerning T cell development is correct? A. Progenitor T cells that enter the thymus from the bone marrow express CD4 or CD8 B. Interaction with thymic non-lymphoid cells is critical C. Maturation in the thymus requires the presence of foreign antigen D. MHC II molecules are not involved in positive selection
Question 3 Which of the following statements about TI-1 antigens is FALSE? They require T cell help They do not result in memory cells They do not result in class switch or somatic hypermutation They contain a mitogen Question 4 What transcription factor is used to identify Treg celis? A) FoxP3 CTLA4 GATA3 D BCL6
QUESTION 2 Which statement best describes autoimmune diseases? A condition in which B and I cels trigger anaphylactic shock in response to an antigen A condition in which self molecules are treated as non-self A condition in which the adaptive immune system fails to recognize the second infection by the same pathogen A condition in which the immune system creates random antibodies
The following are steps in the cell-mediated inflammatory response. Put them in the correct order. 1. Activated macrophage cells release cytokines. 2. Antigen is engulfed and presented by a macrophage cell w/MHC II complex. 3. The TH1 cell's CD4 protein binds to the MHC II complex. 4. Phagocytosis and inflammation occur. 5. Th1 secrete TNF-alpha and other cytokines which activates the macrophage. A. 3, 4, 1, 2,5 В. 2, 3, 4, 5, 1 C. 3,5, 4, 1, 2 D. 2,3,5, 1, 4
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