Antigen MCQs

Biochemistry Objective Questions

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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

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

3. A molecule that can be covalently linked to a non-immunogenic antigen to make it an immunogen is called a (n)

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

5. Very low doses of antigen may induce

A. hypersensitivity

B. immunological ignorance

C. low zone tolerance

D. low zone immunity

6. During the lag period between antigen contact and detection of adaptive immunity,

A. antigen is hidden from the immune system in macrophages

B. innate immune effectors are eliminating antigen

C. innate immunity blocks the activation of adaptive immune effector cells

D. new B and T cells with the appropriate antigen specificity must be produced in the bone marrow

7. Lymphocytes are activated by antigen in the

A. blood stream

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