Biology: Science for Life with Physiology (6th Edition) (Belk, Border & Maier, The Biology: Science for Life Series, 5th Edition)
6th Edition
ISBN: 9780134555430
Author: Colleen Belk, Virginia Borden Maier
Publisher: PEARSON
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Chapter 21, Problem 7LTB
Summary Introduction
Introduction:
The immune system can be defined as the organs and body processes that resist the infection and toxins. This system includes the organs such as bone marrow, thymus, and lymph nodes. Helper T cells are the most significant cells in adaptive immunity. These are needed for about all the adaptive immune responses. These cells aid in the activation of B-cells to release the antibodies and macrophages to destroy the consumed microbes. In addition, they help in the activation of cytotoxic T-cells to destroy the infected target cells.
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Students have asked these similar questions
Which of the following is NOT one of the major functions of T lymphocytes (T cells)?
activating the immune system
binding to antigens presented by MHC proteins
production of antibodies
forming memory cells to more rapidly respond to future infections by the same pathogen
attacking our own cells that are infected with a virus or cancerous
Which of the following is also called a CD8 or killer T cell?
Macrophage
B lymphocyte
helper T lymphocyte
cytotoxic T lymphocyte
Which of the following is NOT a component of the adaptive (specific) immune system?
cytotoxic T cells
antibodies
helper T cells
memory B and T cells
neutrophils
Chapter 21 Solutions
Biology: Science for Life with Physiology (6th Edition) (Belk, Border & Maier, The Biology: Science for Life Series, 5th Edition)
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Similar questions
- 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_forwardMatch 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 markersarrow_forwardMatch the immunity concepts: __________ inflammation __________ antibody secretion __________ phagocyte __________ immunological memory __________ vaccination __________ allergy a. neutrophil b. plasma cell c. nonspecific response d. purposely causing memory cell production e. basis of secondary immune response f. nonprotective immune responsearrow_forward
- Which of the following is a FALSE statement about innate immunity? Natural killer cells are participants in the process It must be primed by the presence of a specific antigen It includes inflammatory responses It may involve the formation of complement protein cascades It includes physical and chemical barriersarrow_forwardWhich of the following is true about the innate immune system? Check all that apply Phagocytosis is an adaptive immunity component required for elimination of microbes Innate immune cells are macrophages and dendritic cells that engulf pathogens but also present antigen to T lymphocytes Innate immunity improves with repeated infections Neutrophils are the abundant innate immune cells circulating in blood Innate immune system provides protection immediately after infection in a non-specific mannerarrow_forwardWhich of the following is a protein involved with the innate immune response? eosinophil Immunoglobulin M fibrin lysozymearrow_forward
- Which is/are false about innate and specific immunity? B cells are part of the innate immune system T cells activate B cells and cause them to undergo clonal expansion Langerhans cells are specialized to detect pathogens in the skin Eosinophils are part of the innate immune systemarrow_forwardWhich type of cell is ultimately the one which will remove foreign and unnecessary material from the body. lymph cells macrophages B-cells Helper-T cellsarrow_forwardWhich of the following is NOT an event that can result in an autoimmune disease? Which of the following is NOT an event that can result in an autoimmune disease? binding of a T cell to an antigen without receiving a co-stimulatory signal activation of self-reactive lymphocytes that survived negative selection genetic mutations causing changes in the structure of self-antigens cross-reaction of antibodies produced against foreign antigens with self-antigensarrow_forward
- This type of lymphocyte contains CD4 receptor sites used by the HIV virus. All of the above Helper T-cells B-cells Cytotoxic T-cellsarrow_forwardWhich of the following is not a component of an autoimmune response? The body's immune system targets its own tissues. Lymphocytes are produced that cannot discriminate between self and nonself. A normally harmless substance provokes an immune response in some people. An autoimmune response may be triggered by infection by a bacterium or virus such as HIV.arrow_forwardWhich of the following defines a memory cell? Microorganism that typically lives on the human body surface Self-protein on the surface of a vertebrate body cell Antigen-sensitized lymphocyte that forms in an immune response and acts immediately Long-lived antigen-sensitized lymphocyte that can act in a secondary immune responsearrow_forward
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