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________ are of the same type since they are derived from the same B cell and are against a specific antigen.


A) Monoclonal antibodies
B) Agglutination factors
C) Autoimmune agents
D) Immunosuppressant agents
E) Allergen antibodies

F) A) and E)
G) A) and C)

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Which is NOT part of a description of an antibody molecule?


A) contains two light chains and two heavy chains
B) contains an antigen-binding site on each arm
C) contains a constant and a variable region on each chain
D) forms an X-shaped protein molecule

E) A) and B)
F) B) and C)

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The problem with tissue rejection following organ transplants


A) is due to the tissues being recognized as nonself,and therefore being treated as a foreign substance.
B) can be reduced if the organ donor is a close relative with very similar tissue proteins.
C) can be reduced by administering immunosuppressive drugs.
D) All of the choices are correct.
E) None of these are correct.

F) C) and E)
G) A) and B)

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Which kind of T cell is most important in the removal of cancer cells or virally infected cells from the body?


A) helper T cells
B) cytotoxic T cells
C) suppressor T cells
D) memory T cells

E) None of the above
F) B) and D)

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Which of the following T cells are mismatched with their functions?


A) Helper T cells - secrete cytokines to control immune responses
B) Cytotoxic T cells - destroy non-self proteins
C) Memory T cells - mediate apoptosis
D) All of the choices are correctly matched with their functions.

E) None of the above
F) All of the above

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A failure in the lymphatic valves located in the left subclavian vein may result in


A) edema in the left arm and left ventral chest wall.
B) a decrease of fluid in the left arm and left ventral chest wall.
C) an overproduction of T cells within the thymus.
D) an increase in the amount of lipoproteins in the bloodstream.

E) B) and C)
F) All of the above

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As lymph passes through the sinuses of lymph nodes,it is filtered by ________ that engulf debris and pathogens.


A) T cells
B) B cells
C) neutrophils
D) macrophages

E) A) and B)
F) A) and C)

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Innate immunity is a defense system that becomes fully functional after it has undergone a period of exposure to various pathogens.

A) True
B) False

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Physician Edward Jenner promoted the use of cowpox,a harmless pathogen related to the dangerous smallpox,as a vaccination to provide patients immunity from future smallpox epidemics.This is an example of


A) passive immunity.
B) active immunity.
C) an inflammatory response that decreased the IgE production and increased T cells.
D) developing high levels of complement.
E) developing high levels of interferon although Jenner did not realize these diseases were viral.

F) D) and E)
G) A) and E)

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The activities of macrophages


A) are part of the nonspecific response against disease.
B) stimulate lymphocytes to carry on specific immunity.
C) stimulate phagocytic neutrophils.
D) do none of these things.
E) are part of the nonspecific response against disease and stimulate phagocytic neutrophils.

F) A) and E)
G) B) and E)

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Which of the following autoimmune diseases can potentially be avoided by preventing or completely curing a Streptococcus infection?


A) Rheumatic fever
B) Rheumatoid arthritis
C) Systemic lupus
D) HIV

E) B) and C)
F) B) and D)

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Maturation of B cells occurs in the


A) bone marrow.
B) lymph nodes.
C) spleen.
D) thymus.
E) Peyer's patches.

F) C) and E)
G) C) and D)

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Which antibody class is most prevalent in the bloodstream?


A) IgA
B) IgG
C) IgE
D) IgM
E) IgD

F) C) and E)
G) C) and D)

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Rejection of transplanted tissue is treated with immunosuppressive drugs that prevent the activity of B cells.

A) True
B) False

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The clonal selection theory states that


A) all B cells are exact clones of each other.
B) all T cells are exact clones of each other.
C) when a B or T cell is stimulated by encountering the correct antigen,it divides to form a clone of cells that will respond to the same antigen.
D) when a B or T cell is stimulated by encountering the correct antibody,it divides to form a clone of cells that will respond to the same antibody.

E) A) and B)
F) None of the above

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Which of the following is not a function of the lymphatic system?


A) Produce and distribute lymphocytes.
B) Absorb excess tissue fluid and return it to the blood stream.
C) Absorb fats and transport them to the bloodstream.
D) All of these are functions of the lymphatic system.

E) None of the above
F) A) and C)

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Explain the underlying cause and consequences of an individual that develops severe combined immunodeficiency (SCID).

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Primary immunodeficiencies are genetic i...

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Innate immunity is more likely to play a role in defending the body against which of the following invaders?


A) microbial pathogens
B) small pox virus
C) chicken pox
D) measles

E) A) and C)
F) B) and C)

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All of the following are functions of the lymphatic system EXCEPT


A) absorbing excess tissue fluids and returning them to the bloodstream.
B) transporting gases,nutrients,and metabolic wastes to parts of the body which have exchange boundaries with the external environment.
C) production,maintenance,and distribution of lymphocytes.
D) defending the body against pathogens.

E) B) and D)
F) A) and B)

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Allergies are hypersensitivities to substances that ordinarily would do no harm to the body.

A) True
B) False

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