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MCQs

Total Questions : 119 | Page 12 of 12 pages
Question 111. Antigen, when injected in the body activates its specific lymphocytes in the
  1.    blood circulation
  2.    MALT (mucosa associated
  3.    draining lymph nodes
  4.    spleen lymphoid tissue
 Discuss Question
Answer: Option C. -> draining lymph nodes
Question 112. Very low doses of antigen may induce
  1.    hypersensitivity
  2.    low zone immunity
  3.    immunological ignorance
  4.    low zone tolerance
 Discuss Question
Answer: Option D. -> low zone tolerance
Question 113. 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 114. CD antigens
  1.    function as receptors for cytokine and CAMs
  2.    are expressed on immune cells to mark them for separation
  3.    are each expressed on only one cell type
  4.    allow leukocytes to recognize antigen
 Discuss Question
Answer: Option A. -> function as receptors for cytokine and CAMs
Question 115. 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 116. A pathogen can be a (n)
  1.    bacteria
  2.    agent that causes a disease
  3.    All of these
  4.    virus
 Discuss Question
Answer: Option C. -> All of these
Question 117. A virus vaccine that can activate cytotoxic T cells must contain
  1.    a high dose of virus particles
  2.    virus peptides
  3.    live virus
  4.    an adjuvant to stimulate T cell division
 Discuss Question
Answer: Option C. -> live virus
Question 118. 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
  1.    a hapten
  2.    an immunogen
  3.    both an antigen and a hapten
  4.    an antigen
 Discuss Question
Answer: Option C. -> both an antigen and a hapten
Question 119. The ability of an antigen to induce an immune response does not depend on the antigen's
  1.    ability to enter the thyroid
  2.    degree of aggregation
  3.    size
  4.    dose
 Discuss Question
Answer: Option A. -> ability to enter the thyroid

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