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Antigen (Biochemistry) Question and Answers-Page first

Antigen problems


  • 1. Which of the following is incorrect with regard to antigen epitopes?

  • Options
  • 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
  • Discuss
  • 2. Very low doses of antigen may induce

  • Options
  • A. hypersensitivity
  • B. immunological ignorance
  • C. low zone tolerance
  • D. low zone immunity
  • Discuss
  • 3. CD antigens

  • Options
  • A. allow leukocytes to recognize antigen
  • B. are each expressed on only one cell type
  • C. are expressed on immune cells to mark them for separation
  • D. function as receptors for cytokine and CAMs
  • Discuss
  • 4. A molecule that can be covalently linked to a non-immunogenic antigen to make it an immunogen is called a (n)

  • Options
  • A. adjuvant
  • B. carrier
  • C. hapten
  • D. mitogen
  • Discuss
  • 5. The ability of an antigen to induce an immune response does not depend on the antigen's

  • Options
  • A. ability to enter the thyroid
  • B. degree of aggregation
  • C. dose
  • D. size
  • Discuss
  • 6. During the lag period between antigen contact and detection of adaptive immunity,

  • Options
  • 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
  • Discuss
  • 7. For specific antigen recognition by T cells,

  • Options
  • 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
  • Discuss
  • 8. A pathogen can be a (n)

  • Options
  • A. agent that causes a disease
  • B. virus
  • C. bacteria
  • D. All of these
  • Discuss
  • 9. The antibiotic penicillin is a small molecule that does not induce antibody formation. However, penicillin binds to serum proteins and forms a complex that in some people induces antibody formation resulting in an allergic reaction. Penicillin is therefore

  • Options
  • A. an antigen
  • B. a hapten
  • C. an immunogen
  • D. both an antigen and a hapten
  • Discuss
  • 10. Antigen, when injected in the body activates its specific lymphocytes in the

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

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