Antigen – Section 1

1. For specific antigen recognition by T cells,

A. antigen is bound by a T cell membrane antibody
B. denaturation of antigen does not reduce epitope recognition
C. MHC molecules are not required
D. antigen exposure during T cell maturation is required

Correct Answer: B. denaturation of antigen does not reduce epitope recognition
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2. Antigen, when injected in the body activates its specific lymphocytes in the

A. blood circulation
B. draining lymph nodes
C. MALT (mucosa associated)
D. spleen lymphoid tissue

Correct Answer: B. draining lymph nodes
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3. A molecule that can be covalently linked to a non-immunogenic antigen to make it an immunogen is called a (n)

A. adjuvant
B. carrier
C. hapten
D. mitogen

Correct Answer: B. carrier
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4. Which of the following is incorrect with regard to antigen epitopes?

A. An epitope may be shared by two different antigens
B. A protein molecule usually contains multiple epitopes
C. B cells bind only processed antigen epitopes
D. Epitopes may be linear or assembled

Correct Answer: C. B cells bind only processed antigen epitopes
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5. Very low doses of antigen may induce

A. hypersensitivity
B. immunological ignorance
C. low zone tolerance
D. low zone immunity

Correct Answer: C. low zone tolerance
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