Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 45, Problem 4TYK
Summary Introduction
Introduction:
B cells are a kind of white blood cells, which play an important role in the humoral immune response of the adaptive immunity by releasing the antibodies. B lymphocytes differentiate into two types of cells, which are the plasma B cells and the memory B cells.
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Choose the most accurate characteristic of B cells.
A) They help establish and control the sensitivity of the immune response.
B) They stimulate the activities of T cells.
C) They attack foreign cells, normal cells infected with viruses, and cancer cells that appear in normal tissues.
D) They continually monitor peripheral tissues.
E) They differentiate into plasma cells that secrete antibodies.
Activated helper T Cells participate in which of the following processes?
a.) Differentiation of memory B cells
b.) Activation of cytotoxic T Cells
c.) Facilitation of macrophage phagocytosis
d.) All of above
Explain why each choice (a-d) is correct or incorrect.
T cells are differentiated into two groups based on their glycoproteins CD4 or CD8. Which of the following is true of CD4 T cells?
a. They become cytotoxic T cells.
b. The become antigen presenting cells.
c. They become T helper cells.
d. They become plasma cells.
Chapter 45 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 45.1 - Prob. 1SBCh. 45.1 - What are the key differences between innate...Ch. 45.2 - Prob. 1SBCh. 45.2 - What processes specifically cause each...Ch. 45.2 - Prob. 3SBCh. 45.2 - Prob. 4SBCh. 45.3 - How, in general, do antibody-mediated and...Ch. 45.3 - Prob. 2SBCh. 45.3 - Prob. 3SBCh. 45.3 - What is clonal selection?
Ch. 45.3 - Prob. 5SBCh. 45.4 - Prob. 1SBCh. 45.4 - Prob. 2SBCh. 45.5 - Compare invertebrate and mammalian immune...Ch. 45 - Prob. 1TYKCh. 45 - Which of the following is not a component of the...Ch. 45 - Prob. 3TYKCh. 45 - Prob. 4TYKCh. 45 - Prob. 5TYKCh. 45 - Prob. 6TYKCh. 45 - Prob. 7TYKCh. 45 - Prob. 8TYKCh. 45 - After Sally punctured her hand with a dirty nail,...Ch. 45 - Prob. 10TYKCh. 45 - Prob. 11TYKCh. 45 - Prob. 12TYKCh. 45 - Prob. 13TYKCh. 45 - Prob. 14TYKCh. 45 - Apply Evolutionary Thinking Defensins are found in...Ch. 45 - Prob. 1ITDCh. 45 - Prob. 2ITDCh. 45 - Prob. 3ITDCh. 45 - Prob. 4ITD
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Similar questions
- Which of the choices is required to activate a helper T cell, which in turn can stimulate antibody production by B cells? A)An antibody displayed by a major histocompatibility complex protein B)A major histocompatibility complex protein alone C)An antigen displayed by a major histocompatibility complex protein D)An antigen alonearrow_forwardDiGeorge syndrome is a congenital disease that results in a poorly developed, nonfunctioning thymus gland. Which of the following would be a likely problem experienced by a baby with DiGeorge syndrome? a. lack of B cells b. lack of antibodies c. lack of T cells d. lack of macrophagesarrow_forwardExplain each of the ways that the immune system has a mechanism of control in the development and function of B cells. What are the ramifications if these control mechanisms are not in place? What control mechanism do you feel is the most important to the development and function of B cells?arrow_forward
- To become a fully activated, antibody-secreting cell, B cells usually need: a. to encounter an antigen or receive a signal delivered by a helper T cell. b. to ingest a foreign invader such as a microobe. c. activation by a plasma cell d. contact with an antigen and helper T cell cytokinesarrow_forwardThe germinal center of a lymph node a. Is the location of B cells undergoing clonal expansion b. Is the location of plasma cells c. Is the location of B cells that have not yet contacted their antigen d. In a micrograph, Is the light-colored center of an activated lymphoid folliclearrow_forwardWhich of the following is NOT true about T cells?(a) T cells develop from lymphoid stem cells in the bonemarrow and mature in the thymus.(b) Cell-mediated immunity is primarily carried out by Tcells.(c) Subsequent differentiation of T cells produces cytotoxic(killer) T cells, delayed-hypersensitivity T cells, helper Tcells, and regulatory T cells.(d) Natural killer cells (NK) are exclusively differentiated Tcells.(e) T cells act in situations where antigens are embeddedin cell membranes or are inside host cells and thus areinaccessible to antibodies.arrow_forward
- Which of these statements about the Fab portion of antibodies is true? a.It binds to antigens. b.Its amino acid sequences are variable. c. It consists of both H and L chains. d. All of these are true.arrow_forwardWhich of these statements about T lymphocytes is false? a. Saome T cells promote the activity of B cells. b. Some T cells suppress the activity of B cells. c. Some T cells secrete interferon. d. Some T cells produce antibodies.arrow_forwardIn a normal individual, a T cell that interacts with a self-antigen in the thymus will more than likely undergo what process (which answer is best)? A) apoptosis B) release granules C) activation D) extravasation E) anergyarrow_forward
- Which of the following statements regarding T cells activated by specific antigen is incorrect? a. They receive co-stimulatory signals through CD28. b. They suppress expression of sphingosine 1-phosphate (SIP). c. They take several days before differentiating into effector T cells. d. They cease to secrete and respond to interleukin-2 (IL-2). e. They begin to express CTLA4, which serves to limit T-cell proliferation.arrow_forwardSuppose a person recovers normally from viral infections, but then gets the same viral infections over and over again- unlike the rest of us. A. What is probably wrong –B cells, helper T cells and/or cytotoxic T cells? B. Should this person be at a higher risk of cancer than the rest of us? C. Should this person be able to lyse bacterial cells as well as the rest of us? D. Should this person tolerate a graft (from an unreated person) better than you are me?arrow_forwardIn the secondary response, the IgG levels rise much faster than they did during the first antibody response. Why is this?Choose one: A. The plasma cells that were produced for the first response have a very long half-life, so they are able to produce antibodies for the second response without activation of other B cells. B. Memory B cells are capable of producing antibodies directly, so there is no need to spend time differentiating them into plasma cells. C. By the secondary response, there are B cells and T cells that have differentiated into plasma cells, giving more total plasma cells to work with. D. Memory B cells are present for the secondary response. Those cells are much easier to activate than the naive B cells; therefore, the response occurs much more quickly and on a larger scale.arrow_forward
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