CAMPBEL BIOLOGY:CONCEPTS & CONNECTIONS
10th Edition
ISBN: 9780136538820
Author: Taylor
Publisher: INTER PEAR
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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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Students have asked these similar questions
Decreased immunity is a symptom of HIV/AIDS. This is caused by which of the following?
Select one:
a. HIV destroys antigens. This decreases the possibility of recognizing pathogens in the future.
b. HIV destroys memory T cells. If the body is infected again, there is no antibodies to fight an infection.
c. HIV attacks the macrophages. Pathogens cannot be destroyed once they enter the body.
d. HIV attacks the helper T cells. This allows pathogen cells to enter the body unnoticed.
Which cells produce antibodies?
a. Neutrophils.
b. Dendritic cells.
c. Cytotoxic T cells.
d. Plasma cells.
The role of the humoral immune response is to
a. kill infected cellsb. fight pathogens found in body fluid
c. prevent pathogens from entering the body
d. initiate an inflammatory response
Antibodies 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.
Chapter 24 Solutions
CAMPBEL BIOLOGY:CONCEPTS & CONNECTIONS
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 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.arrow_forwardAn antigen-presenting cell (APC)a. presents antigens to T cells.b. secretes antibodies.c. marks each human cell as belonging to that person.d. secretes cytokines only.arrow_forwardWhich of the following is NOT true about T cells? A. Natural killer cells (NK) are exclusively differentiated T cells B. T cells act in situations where antigens are embedded in cell membranes or are inside host cells and thus are inaccessible to antibodies C. T cells develop from lymphoid stem cells in bone marrow and mature in the thymus D. Cell-mediated immunity is primarily carried out by T cellsarrow_forward
- The T-cell antigen receptor is similar to immunoglobulin molecules in that it: a. can cross the placenta and provide protection to a fetus b. remains bound to the cell surface and is never secreted c. binds complement d. contains V and C regions on each of its chainarrow_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_forwardExplain why each choice (a-d) is correct or incorrect. Which statement is true about T cells? a. They usually directly recognize antigens, which then activates a subpopulation of killer cells b. Their proliferation is enhanced by interleukins 1 and 2. c. Once activated, they cannot secrete cytokines. d. They will develop into cytotoxic T cells if antigen is complexed with class II MHC proteins.arrow_forward
- The immune system includes the various responses the body uses to ensure survival in the presence of disease-causing agents. Identify the example of innate immunity. A. Infected host cells are killed by toxic proteins from cytotoxic T cells. B. Toll-like receptors bind to foreign molecule fragments to initiate immune response. C. CD4 accessory proteins on the helper T cell surface bind to class II MHC molecules. D. IgE antibodies recognize and attach to pollen grains, stimulating an allergic reaction.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_forwardVaccines are given to provide protection against pathogen causing infections. Which of the following statements best describes how vaccines work? a Fever and swelling develop which is the first response in killing a pathogen b. Antibodies in the vaccine provide the body with nonspecific immunity to an antigen. c. An inactivated or killed virus stimulates the body to develop specific immunity to that type of virus. d. Heathy bacteria causes the body to release toxins which will protect the body if later exposed to different type of bacteria.arrow_forward
- Ibuprofen 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_forwardWhich of the following is not important in the antiviral innate immune response?a. interferonsb. natural killer cellsc. complementd. microphagesarrow_forwardWhich immune cells circulate in the body, providing immunity by producing antibodies? A. T-cells, B. Antigens, C. B-cells, D. Lymph Nodesarrow_forward
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