Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 43, Problem 11TYK
Summary Introduction
The immune system protects our body from disease-causing microorganisms. It is classified into two types, namely innate immunity and adaptive immunity. The innate immunity is present sincethe time of birth, whereas the adaptive or acquired immunity arises in the later stages of life. Both the defense mechanism involves various genes and proteins to target the invading organisms and destroying them.
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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.
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
In 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)
anergy
Chapter 43 Solutions
Study Guide for Campbell Biology
Ch. 43 - Briefly describe the insect defense system against...Ch. 43 - Prob. 2IQCh. 43 - Prob. 3IQCh. 43 - Prob. 4IQCh. 43 - Prob. 5IQCh. 43 - Prob. 6IQCh. 43 - Prob. 7IQCh. 43 - Prob. 8IQCh. 43 - Prob. 9IQCh. 43 - Prob. 1SYK
Ch. 43 - Prob. 2SYKCh. 43 - Although innate and adaptive immunity were...Ch. 43 - Prob. 1TYKCh. 43 - Prob. 2TYKCh. 43 - Prob. 3TYKCh. 43 - The process of clonal selection accounts for a....Ch. 43 - Prob. 5TYKCh. 43 - Which of the following destroys a target cell by...Ch. 43 - Prob. 7TYKCh. 43 - Prob. 8TYKCh. 43 - Prob. 9TYKCh. 43 - Prob. 10TYKCh. 43 - Prob. 11TYKCh. 43 - Prob. 12TYKCh. 43 - Prob. 13TYKCh. 43 - Prob. 14TYKCh. 43 - Prob. 15TYKCh. 43 - Prob. 16TYKCh. 43 - Prob. 17TYKCh. 43 - What is the key advantage to the use of monoclonal...Ch. 43 - Prob. 19TYKCh. 43 - Prob. 20TYKCh. 43 - Prob. 21TYKCh. 43 - From which of the following conditions would an...
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- Suppose 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_forwardWhich 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_forwardWhich of the following should be the same inidentical twins?(A) the set of antibodies produced(B) the set of MHC molecules produced(C) the set of T cell antigen receptors produced(D) the set of immune cells eliminated as self-reactivearrow_forward
- Which of the following is a function of cytokines? A. Promote antibody invaders. B. Help T cells recognize invaders. C. Attract white blood cells to a possible invader. D. Destroy cancer cells.arrow_forwardThe process of generating the diversity of T cell receptors as t cells mature is done how? a. through inherited exposure to antigens in utero b. None of these c. Through a process of exposure to antigens from the environment d. Through random recombination of the genes used to code for T cell receptorsarrow_forwardWhich of the following does not occur during a secondary immuneresponse?a. Antibodies are made quickly and in great amounts.b. Antibody production lasts longer than in a primary response.c. Clonal selection occurs for B cells.d. All of these are correct.arrow_forward
- All of the following are true in reference to T-cell priming except _____. a. it occurs in primary lymphoid organs b. it transforms naive T cells into differentiated effector T cells c. it is the first stage of a primary adaptive immune response d. it requires interaction between naive T cells and antigen-presenting cells e. it takes place in many locations including, but not limited to, lymph nodes, Peyer’s patches, and the tonsils.arrow_forwardWhat is the single best defining feature of a lymphocyte? A A type of leukocyte B A cell that is specialized to produce cytokines C Present in the circulation D Antigen-specific E Able to undergo cell proliferation What is the characteristic that best defines the adaptive (acquired immune response? A It exhibits immunological memory B It involves leukocytes C It involves cell proliferation D The cells involved recognize pathogens E It is not present at birtharrow_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
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