Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 42, Problem 2VCQ
Figure 42.14 Based on what you know about MHC receptors, why do you think an organ transplanted
from an incompatible donor to a recipient will be rejected?
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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 is NOT true of B ceIls?a. Has membrane-bound antibodies.b. Produces antibodies when activated into plasma cells.c. Has MHC class II molecules.d. Kills infected body cells.
The major histocompatibility complex (MHC) (a) consists of Y-shaped molecules (b) encodes certain antibodies (c) encodes Toll-like receptors (d) inhibits complement release from macrophages (e) encodes a group ofcell-surface proteins.
Chapter 42 Solutions
Biology 2e
Ch. 42 - Figure 42.11 Which of the following statements...Ch. 42 - Figure 42.14 Based on what you know about MHC...Ch. 42 - Figure 42.16 The Rh antigen is found on Rh...Ch. 42 - Which of the following is a barrier against...Ch. 42 - Although interferons have several effects, they...Ch. 42 - Which organelle do phagocytes use to digest...Ch. 42 - Which innate immune system component uses MHC I...Ch. 42 - Which of the following is both a phagocyte and an...Ch. 42 - Which immune cells bind MHC molecules on APCs via...Ch. 42 - What “self” pattern is identified by NK cells?...
Ch. 42 - The acquired ability to prevent an unnecessary or...Ch. 42 - A memory B cell can differentiate upon reexposure...Ch. 42 - Foreign particles circulating in the blood are...Ch. 42 - The structure of an antibody is similar to the...Ch. 42 - The first antibody class to appear in the serum in...Ch. 42 - What is the most abundant antibody class detected...Ch. 42 - Breastfed infants typically are resistant to...Ch. 42 - Allergy to pollen is classified as: an autoimmune...Ch. 42 - A potential cause of acquired autoimmunity is...Ch. 42 - Autoantibodies are probably involved in: reactions...Ch. 42 - Which of the following diseases is not due to...Ch. 42 - Different MHC I molecules between donor and...Ch. 42 - If a series of genetic mutations prevented some,...Ch. 42 - Explain the difference between an epitope and an...Ch. 42 - What is a naïve B or T cell?Ch. 42 - How does the Th1 response differ from the Th2...Ch. 42 - In mammalian adaptive immune systems, T cell...Ch. 42 - How do B and T cells differ with respect to...Ch. 42 - Why is the immune response after reinfection much...Ch. 42 - What are the benefits and costs of antibody cross...
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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.arrow_forwardWhich of the following steps are part of the processing of antigen by immune cells? Select all that apply. The vesicle containing the antigen fuses with a lysosome. Enzymes in the lysosome digest the antigen into components that bind to MHC markers. The antigen is initially released from the phagocytic cell via exocytosis. The antigen-MHC complex becomes displayed on the cell's interior.arrow_forwardWhich is/are important in innate immune responses?a. interferonsb. clonal inactivationc. lymphocyte activationd. secretion of antibodies from plasma cellse. class 1 MHC proteinsarrow_forward
- Human immune system During the inflammatory response, histamine plays a key role in causing capillaries to become more permeable to phagocytic cells such as neutrophils. Antibodies directly kill bacterial cells by activating cell death programs that lead to apoptosis. Interferons are signaling molecules produced by bacteria that block (or interfere) with the ability of plasma cells to release antibodies.arrow_forwardImmune system of humans a) Secreted B cell receptors can function as opsonins. b) MHC class II molecules can be found on the surface of nearly every cell of the body. c) The membrane attack complex (MAC) is used by natural killer cells to eliminate virus infected host cells. d) Both (a) and (b) are correct and (c) is incorrect e) Statements (a), (b) and (c) are all correctarrow_forwardHerd immunity means that the entire population (not just those who are vaccinated) are protected from a disease. What is one way that herd immunity protects an unvaccinated person (such as an infant who is too young to be vaccinated or a person who is immunocompromised)?arrow_forward
- When describing cytokines which statement is false? Group of answer choices Cytokines can be used as therapeutics to treat viral infections Cytokines help stimulate and modulate the function of the immune system Affecting cytokine production with drugs never puts the patient at risk Cells can produce cytokines to autostimulate and/or attract immune cells Drugs can prevent cytokine productionarrow_forwardImagine a person catches sars-coV-2 infection, which route of cell signaling will be activated to generate an immune response?arrow_forwardWhich of the following is part of the second line of defense against pathogens?a. skin b. mucus membranesc. lysozyme in tears d. phagocytes Which of the following does NOT have MHC class II molecules on the surface of their cell membranes? a. Macrophages.b. Dendritic cells.c. B cells.d. Helper T cells.arrow_forward
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