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MCQs

Total Questions : 17 | Page 1 of 2 pages
Question 1.  Antigen, when injected in the body activates its specific lymphocytes in the
  1.    blood circulation
  2.    draining lymph nodes
  3.    MALT (mucosa associated
  4.    spleen lymphoid tissue
 Discuss Question
Answer: Option B. -> draining lymph nodes
Question 2.  
A molecule that can be covalently linked to a non-immunogenic antigen to make it an immunogen is called a (n)
  1.    adjuvant
  2.    carrier
  3.    hapten
  4.    mitogen
 Discuss Question
Answer: Option B. -> carrier
Question 3.  For specific antigen recognition by T cells,
  1.    antigen is bound by a T cell membrane antibody
  2.    denaturation of antigen does not reduce epitope recognition
  3.    MHC molecules are not required
  4.    antigen exposure during T cell maturation is required
 Discuss Question
Answer: Option B. -> denaturation of antigen does not reduce epitope recognition
Question 4.  Lymphocytes are activated by antigen in the
  1.    blood stream
  2.    bone marrow
  3.    liver
  4.    lymph nodes
 Discuss Question
Answer: Option D. -> lymph nodes
Question 5.  Which of the following is incorrect with regard to antigen epitopes?
  1.    An epitope may be shared by two different antigens
  2.    A protein molecule usually contains multiple epitopes
  3.    B cells bind only processed antigen epitopes
  4.    Epitopes may be linear or assembled
 Discuss Question
Answer: Option C. -> B cells bind only processed antigen epitopes
Question 6.  Very low doses of antigen may induce
  1.    hypersensitivity
  2.    immunological ignorance
  3.    low zone tolerance
  4.    low zone immunity
 Discuss Question
Answer: Option C. -> low zone tolerance
Question 7.  During the lag period between antigen contact and detection of adaptive immunity,
  1.    antigen is hidden from the immune system in macrophages
  2.    innate immune effectors are eliminating antigen
  3.    innate immunity blocks the activation of adaptive immune effector cells
  4.    new B and T cells with the appropriate antigen specificity must be produced in the bone marrow
 Discuss Question
Answer: Option B. -> innate immune effectors are eliminating antigen
Question 8.  A pathogen can be a (n)
  1.    agent that causes a disease
  2.    virus
  3.    bacteria
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these
Question 9.  CD antigens
  1.    allow leukocytes to recognize antigen
  2.    are each expressed on only one cell type
  3.    are expressed on immune cells to mark them for separation
  4.    function as receptors for cytokine and CAMs
 Discuss Question
Answer: Option D. -> function as receptors for cytokine and CAMs
Question 10. . A virus vaccine that can activate cytotoxic T cells must contain
  1.    a high dose of virus particles
  2.    an adjuvant to stimulate T cell division
  3.    live virus
  4.    virus peptides
 Discuss Question
Answer: Option C. -> live virus

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