Microbiology: An Introduction (13th Edition)
13th Edition
ISBN: 9780134605180
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case, Derek Weber, Warner Bair
Publisher: PEARSON
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Chapter 17, Problem 9MCQ
Summary Introduction
Introduction:
The cell mediated immune response is mediated by T lymphocytes, which participates in the phagocytosis, Natural killer cells (NK), formation of cytotoxic T lymphocytes and releases cytokines for antigen response. The main function of the cell mediated immune response is to detect and eliminate the intracellular pathogens by phagocytosis, delayed hypersensitivity, anti-viral immunity, graft rejection and graft versus host disease.
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Which of the following statements is not true?(A) An antibody has more than one antigen-binding site.(B) A lymphocyte has receptors for multiple differentantigens.(C) An antigen can have different epitopes.(D) A liver or muscle cell makes one class of MHC molecule.
Which of the following statements pertain to this cell. This cell is a precursor to a cell which:
1. is an antigen-presenting cell
2. demonstrates MHC I molecules
3. demonstrates MHC II molecules
4. demonstrates CD4 molecules
5. is capable of synthesizing and releasing perforin and granzymes
Choose from the following:
(A) 1, 2, and 3
(B) 2 and 3 only
(C) 3 and 4 only
(D) 1 and 3
(E) 1, 4, and 5
For question with blanks, choose the combination of answers that most accurately completes the statement.Helper T cells receive antigen from.......... , and cytotoxic T cells receive antigen from............. a. macrophages, B cells b. class II MHC, class I MHC c. viruses, bacteria d. class I MHC, class II MHC
Chapter 17 Solutions
Microbiology: An Introduction (13th Edition)
Ch. 17 - Contrast the terms in the following pairs: a....Ch. 17 - What does MHC stand for? What is the function of...Ch. 17 - Why is dietary protein deficiency associated with...Ch. 17 - Prob. 4RCh. 17 - Prob. 5RCh. 17 - DRAW IT a. In the graph below, at time A the host...Ch. 17 - How would each of the following prevent infection?...Ch. 17 - Prob. 8RCh. 17 - Explain why a person who recovers from a disease...Ch. 17 - Prob. 10R
Ch. 17 - Prob. 1MCQCh. 17 - The type of protection provided by the injection...Ch. 17 - Prob. 3MCQCh. 17 - Prob. 4MCQCh. 17 - Prob. 5MCQCh. 17 - Prob. 6MCQCh. 17 - Prob. 7MCQCh. 17 - Prob. 8MCQCh. 17 - Prob. 9MCQCh. 17 - Prob. 10MCQCh. 17 - Prob. 1ACh. 17 - Why is dietary protein deficiency associated with...Ch. 17 - A positive tuberculin skin test shows cellular...Ch. 17 - On her vacation to Australia, Janet was bitten by...Ch. 17 - Prob. 1CAECh. 17 - Prob. 2CAECh. 17 - A patient with chronic diarrhea was found to lack...Ch. 17 - Newborns (under 1 year) who contract dengue have a...
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- which two of following statements are true for an antigen prsent cell such as dendritic cell? a. Phagocytes are extra cellular pathogens b. Display processed pathoic peptide on the surface of the cell c. Produce antibodies specific for a pathogen d. Activate naive erythrocytesarrow_forwardA patient has contracted an upper respiratory infection caused by a virus. Her initial adaptive immune response to the virus is due to what mechanism of immune surveillance?a. The display of viral antigens by naïve B-cells on class I MHC, which is then recognized by helper T-cells that then activate cytotoxic T-cells.b. The display of viral antigens on class I MHC, which is then displayed to sensitized naïve B-cells, leading to the production of antibodies.c. The display of viral antigens on class II MHC by a sensitized naïve B-cell, which is then activated by a helper T-cell primed to the same antigen to begin producing antibodies.d. The display of viral antigens on class I MHC, which is then displayed to helper T-cells, leading to the activation of naïve cytotoxic T-cells.arrow_forwardWhich of the following statements are true for antigen presentation. a. Antigen presentation means that other cells attach the pathogen first and present it to T cells. b. Antigen-presenting cells display protein fragments, resulting from the digestion of the pathogen, in complex with MHC receptor to B cells c. Antigen presenting cells display protein fragments, resulting from the digestion of the pathogen, in complex with MHC receptor on their surface. d. Antigen-presenting cells are phagocytic cells e. Antigen presentation is required for T cell activation f. Cytokines released by macrophages are required for T cell activation g. T cell receptors recognize the MHC receptors in complex with antigen fragments displayed by antigen-presenting cells. h. Phagocytic cells are involved in innate immunity. Therefore they have no role in T-cell activationarrow_forward
- Human immune system a) Pathogen-associated molecular patterns are conserved molecular structures produced by microorganisms, but not by host cells. b) A virus-infected host cell that displays a viral antigen via MHC class I molecules may become a target of cytotoxic T cells. c) Secreted MHC Class I proteins present in blood plasma can function as opsonins. d) Both (a) and (b) are correct and (c) is incorrect e) Statements (a), (b) and (c) are all correctarrow_forwardCHAPTER 20 The Lymphatic System and Immunity Matching SECTION 3 Revie w Match each lettered term with the most closely related description. a. opsonization 1 b. helper T cells Two parallel pairs of polypeptide chains Found on helper T cells C. antibody d. class II MHC 3 Active and passive 4 Transfer of antibodies e. costimulation Attacked by HIV f. IgM 6 Enhances phagocytosis g. class I MHC h. IgG 7 MHC proteins present in the plasma membranes of all nucleated cells i. passive immunity j. anaphylaxis 8 Differentiate into memory and plasma cells 9 MHC proteins present in the plasma membranes of all APCS and lymphocytes 9 k. CD4 markers 10 I. acquired immunity 10 Antibodies used to determine blood type 11 m. B lymphocytes 11 Secondary binding process required for T cell activation 12 12 Accounts for 80 percent of all immunoglobulins 13 13 Circulating allergen stimulates mast cells throughout body Match each lettered term with thearrow_forwardWhich of the following cells demonstrate MHC II molecules on their surface membrane? 1. B lymphocyte 2. macrophage 3. erythrocyte 4. neuron 5. smooth muscle cell Choose from the following: (A) 1 and 2 (B) 1, 2 and 3 (C) 1, 2, 4, and 5 (D) 1, 2, 3, 4, and 5arrow_forward
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