Campbell Biology: Concepts & Connections, 9e, Access Code
9th Edition
ISBN: 9780134536262
Author: Taylor
Publisher: PEARSON
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Textbook Question
Chapter 24, Problem 4TYK
Which of the following best describes the difference in the way B cells and cytotoxic T cells deal with invaders?
a. B cells confer active immunity; T cells confer passive immunity.
b. B cells send out antibodies to attack; certain T cells can do the attacking themselves.
c. T cells handle the primary immune response; B cells handle the secondary response.
d. B cells are responsible for the cell-mediated immune response; T cells are responsible for the humoral immune response.
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Which of the following statements about T cells is false? a. Helper T cells release cytokines while cytotoxic T cells kill the infected cell. b. Helper T cells are CD4+, while cytotoxic T cells are CD8+. c. MHC II is a receptor found on most body cells, while MHC I is a receptor found on immune cells only. d. The T cell receptor is found on both CD4+ and CD8+ T cells.
Chapter 24 Solutions
Campbell Biology: Concepts & Connections, 9e, Access Code
Ch. 24 - Complete this concept map to summarize the key...Ch. 24 - Foreign molecules that elicit an immune response...Ch. 24 - Which of the following is not part of the...Ch. 24 - Which of the following best describes the...Ch. 24 - Prob. 5TYKCh. 24 - Prob. 6TYKCh. 24 - Prob. 7TYKCh. 24 - Prob. 8TYKCh. 24 - Prob. 9TYKCh. 24 - Which of the following statements is not true? a....
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- Which statement best describes the difference between responses of effector B cells (plasma cells) and those of cytotoxic T cells? (A) B cells confer active immunity;cytotoxic T cells confer passive immunity. (B) B cells respond the first time a pathogen is present; cytotoxic T cells respond subsequent times. (C) B cells secrete antibodies against a pathogen; cytotoxic T cells kill pathogen-infected host cells. (D) B cells carry out the cell-mediated response; cytotoxic T cells carry out the humoral response.arrow_forwardReceptors that trigger innate immune responses a. are antibodies recognizing specific antigens. b. are T-cell receptors recognizing specific antigens. c. recognize pathogen-associated molecular patterns. d. are not specific at all.arrow_forwardWhich cells of the immune system secrete antibodies? A. Natural killer cells only B. T cells only C. B cells only D. Natural killer cells, T cells, and B cells equallyarrow_forward
- What is the one cell type that does the most to coordinate and control the adaptive immune response? A) cytotoxic T cells B) antibodies C) helper T cells D) B cellsarrow_forwardHumoral immunity is the part of the adaptive immune system involving: A.cytotoxic T cells killing infected host cells B.neutrophils eating bacteria C.B cells making antibodies to target the invading pathogen D.Your skin cells protecting you from infection with the acidic pH on the surfacearrow_forwardThe first cell to initiate an adaptive immune response to a novel pathogen is _____. A. an antigen presenting cell such as a neutrophil or macrophage B. a helper T cell in the lymph nodes C. a B cell that binds a pathogen at the site of infection D. a memory cell that is activated directly by the pathogenarrow_forward
- 1. Which of the following is mismatched? a. regulatory T cells: release inhibitory cytokines to dampen the immune response b. helper T cells: directly target and kill cancer cells C. cytotoxic T cells: carry out cellular immune responses d. B cells: can be activated to produce antibodies 2. Which of the following is not one of the basic functions of the nervous system? a. Formulate responses to sensory stimulation b. Send signals rapidly between body parts c. Produce major body fluids such as plasma and interstitial tissue fluid d. Detect sense stimuli 3. One example of a function of neuroglial cells is to... a. Add myelin to axons b. Produce neurotransmitters c. Bind neurotransmitters d. Link one neuron cell to another at the synapse 4. Which of the following features of a system is unlikely to lead to a stable homeostatic system? a. Negative feedback b. Positive Feedback c. Redundancy d. Complexity 5. Homeostasis is illustrated in the human body by the effects of insulin on…arrow_forwardAntibodies against a specific antigen can be injected into a person to provide passive immunity. For which reason is this NOT as effective as the process of vaccination with that antigen? Select one: a. Injection of antibodies may cause allergic reactions, while vaccination never causes allergic reactions. b. Injection of antibodies does not provide long-lasting immunity, and vaccination with antigens triggers a clonal selection of B cells and cytotoxic T cells. c. Vaccination with antigens triggers a clonal selection of B cells and cytotoxic T cells. d. Injection of antibodies does not provide long-lasting immunity. e. Injection of antibodies does not provide long-lasting immunity and may cause allergic reactions, while vaccination never causes allergic reactions.arrow_forwardIbuprofen dampens the immune system’s inflammation response.What might be a short-term consequence of taking ibuprofen?a. Blood vessels may become less permeable.b. Antibodies may become less active.c. Cytotoxic T cells may begin to divide.d. All of the above are correctarrow_forward
- Which of these is not part of insect immunity? (A) enzyme activation of pathogenkilling chemicals (B) activation of natural killer cells (C) phagocytosis by hemocytes (D) production of antimicrobial peptidesarrow_forwardSome individuals are immune-compromised because their bodies do not make enough T-cells. What is the difference between a T-cell and any other cell type in the body? a. T-cells have different genomes than cells of other types b. T-cells have different genes than cells of other types c. T-cells have different proteins than cells of other typesarrow_forwardDuring the adaptive immune response, the role of helper T cells includes _____. Mark all that apply. Group of answer choices a. using CD8 to identify cells that are infected with pathogens b. facilitating clonal selection c. using CD4 to recognize antigen presenting cells d. activating mitosis in B cells e. auto-activation of mitosis (self-activating mitosis to produce more helper T and memory T cells) f.using T cell receptors to bind epitopes on pathogensarrow_forward
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