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Identify the true statement about adaptive immunity.


A) It is exclusive of the specific recognition of invading microbes.
B) It is exclusive of the property of differentiating between foreign substances and its own components.
C) The skin is the most important component of adaptive immunity.
D) Eosinophils, neutrophils, and basophils are the only cells of the immune system involved in adaptive immunity.
E) It involves remembering the invading agents encountered earlier to initiate a response on consecutive encounters.

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

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Which of the following is a similarity between cell-mediated immunity and antibody-mediated immunity?


A) both immunities are types of innate, or nonspecific, immunity
B) neither of the processes takes place in body fluids such as blood and lymph
C) both involve the production of protein molecules by cytotoxic T cells for an immunological response
D) both involve the assistance of helper T cells
E) neither of the processes is triggered by the presence of an unprocessed antigen

F) B) and E)
G) B) and D)

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Clonal selection of lymphocytes involves the production of


A) eosinophils and basophils
B) effector cells and memory cells
C) cytotoxic T cells and helper T cells
D) macrophages and residual bodies
E) antigens and antibodies

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

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A process characteristic of the primary immune response is


A) decrease in immunoglobulin G
B) increase in immunoglobulin E
C) decrease in immunoglobulin A
D) increase in immunoglobulin M
E) decrease in immunoglobulin D

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

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Why is the thymus categorized as a primary lymphoid organ?


A) it is the production site for leukotrienes
B) it is the production site for monocytes
C) it is the maturation site for pre-T cells
D) it is the proliferation site for mature B cells
E) it is the antigen-presenting site

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

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Which of the following is a similarity between dermicidin and defensin?


A) both are produced by sweat glands
B) both are antimicrobial proteins
C) both are involved in reducing the amount of available iron in the blood
D) both are involved in the formation of the membrane attack complex
E) both are part of the adaptive immune responses

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

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What is the role of variable regions in an antibody molecule?


A) costimulating of other secreted antibodies
B) processing and presenting antigens
C) determining the type of antigen-antibody reaction
D) facilitating flexibility of the midregion of the two heavy chains
E) recognizing and binding to specific antigens

F) C) and D)
G) A) and C)

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