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

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

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

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

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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