1. Place the following list of words in the right order; from earlier to latest:Negative T cell selection in thymusa.b.CTEC interation in thymusDouble negative T cells in bone marrowC.d.Double positive T cells in thymusMTEC interaction in thymuse.f. Double negative T cells in thymusg. Release from thymusPositive T cell selection in thymush.1. CTec Negatue PEStrUo2. mtec inleraadesitlymus3.4.5.6.7.8.Define positive and negative selection in thymus.tue Soloctionplokes recsebind moderatonthymusSnsl are Self-reacline arey ntue Selechion.sfine MHC restriction for T cells.

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Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter45: The Immune System: Internal Defense

Section: Chapter Questions

Problem 8TYU

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Similar questions

A person with AIDS will probably:(a) Not make antibody(b) Make a response to T-dependent antigens(c) Make antibody to T-independent antigens(d) Have large numbers of T-helper cells(e) None of the above
Maternal antibodies transmitted via the placenta: A. are an example of natural passive immunity B. are an example of natural active immunity C. are IgG antibodies D. both are IgG antibodies and are an example of natural active immunity E. both are IgG antibodies and are an example of natural passive immunity
The direct, immediate cause of allergic symptoms is the action ofa. the allergen directly on smooth muscleb. the allergen on B lymphocytesc. allergic mediators released from mast cells and basophilsd. IgE on smooth muscle
The _____ occurs 6–8 hours after an initial type I allergic response in which mast cells produce leukotrienes, chemokines, and cytokines. a. Arthus reaction b. late-phase reaction c. delayed-type hypersensitivity reaction d. condition known as anaphylactic shock e. skin rash known as chronic urticaria.
1. Which of the following is true about the clonal selection theory? Select one: a. An antigen selects certain B cells to produce a clone of plasma cells b. An antibody stimulates the multiplication of B cell antigens against it c. T cells select those B cells that should produce antibodies regardless of antigens d. T cells suppress all those B cells except the ones that should divide and multiply e. An antibody selects certain B cells to produce a clone of plasma cells 2. All of the following are functions of the lymphatic system except it does not _(blank) _. Select one: a. Absorb excess fluid and return it to the bloodstream b. Absorb fats c. Produce lymphocytes d. Defend the body against pathogens e. Transport gases throughout the body 3. When a macrophage engulfs a pathogen, a piece of the pathogen is then presented on the macrophage's surface in the _ (blank) _ protein. Select one: a. Self-antigen complex b. Immunoglobulin complex c. Histamine complex d. Cell-mediated…
Which of the following statements is NOT true of a fever?a. Temperature is regulated by chemicals that reset the body's thermostat to a higher setting.b. The higher than normal body temperature impairs the functions of some bacteria.c. The higher than normal body temperature is always harmful.d. The higher temperature impairs leukocytes andantibody production.e. Both c and d. Which of the following statements is NOT true of antibodies?a. They bind to foreign antigens, making them susceptible to being engulfed by phagocytes.b. They serve as specific binding sites on B cells.c. An antibody is usually able to bind to a variety of different types of antigensd. They are composed of two heavy chains and two light chains.
An adult who has been thymectomized will have a T-cell repertoire that _____. a. resembles a patient with DiGeorge syndrome b. is MHC-independent c. is dominated by γ:δ T cells d. fails to provide protective T-cell immunity e. is self-renewing and long lived and does not require replenishment from the thymus.
Non-protein antigens are ineffective becase they cant A. Trigger IgM production B. Be used as a BCR to activate neutrophils C. Be presented on MCH II to activate T helper cells D. Cause B cell apoptosis
In humans, B cells mature in the and T cells mature in the.a. GALT, liver b. bursa, thymus c. bone marrow, thymus d. lymph nodes, spleen
Which ONE of the following is necessary after chimeric antigen receptor (CAR)‐T cell therapy for relapsed acute lymphoblastic leukaemia? Select one: A.2 years of maintenance mercaptopurine B.2 years of maintenance mercaptopurine C.Prophylactic antifungal therapy D.Lifelong immunoglobulin replacement therapy
1. Sensitization occurs when A. the body produces an T cell response to an innocuous substance B. a person has an allergic response to a substance C. the body produces IgE in response to an innocuous substance D. IgE binds to mast cells 2. Match the sensitivity reaction with and an example of it. Type I Type III Type IV Type II A. Eczema B. Reaction resulting from administrating of drugs C. Serum sickness D. Poison ivy 3. Allergic rhinitis results in all of the following except: A. bacterial infections B. conjunctivitis C. asthma D. blocked sinuses
a. Explain why babies with agammaglobulinemia do not developopportunistic infections until about 6 months after birth.b. Explain why people with B-cell deficiencies can benefit fromartificial passive immunotherapy. Explain whether vaccinationwould work for them.c. Explain why T-cell deficiencies usually cause more severe effectsthan B-cell deficiencies.

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