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MCQs

Total Questions : 196 | Page 6 of 20 pages
Question 51. The screening test/s for diagnosis of HIV infection is/are
  1.    ELISA
  2.    Latex agglutination
  3.    Dot blot assay
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Answer: (d).all of these
Question 52. The problem(s) associated with development of a vaccine against HIV is/are
  1.    antibody alone may be insufficient
  2.    rapid mutation of HIV
  3.    virus can spread from cell to cell by fusion to produce syncytia
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Answer: (d).all of these
Question 53. The commonest mode of transmission of HIV is
  1.    parenteral
  2.    perintal
  3.    sexual
  4.    oral
 Discuss Question
Answer: Option C. -> sexual
Answer: (c).sexual
Question 54. The cells most oftenly infected by HIV are
  1.    Null cells
  2.    CD8 + T lymphocytes
  3.    CD4 + T lymphocytes
  4.    None of these
 Discuss Question
Answer: Option C. -> CD4 + T lymphocytes
Answer: (c).CD4 + T lymphocytes
Question 55. Which of the following is the spike antigen of HIV-I?
  1.    gp 120
  2.    gp 140
  3.    gp 36
  4.    gp 41
 Discuss Question
Answer: Option A. -> gp 120
Answer: (a).gp 120
Question 56. Yeast are most likely to grow in frozen fruits during
  1.    slow thawing
  2.    refrigeration
  3.    ambient temperature
  4.    none of these
 Discuss Question
Answer: Option A. -> slow thawing
Answer: (a).slow thawing
Question 57. Watery soft rot is found mostly in
  1.    fruits
  2.    vegetables
  3.    cereals
  4.    all of these
 Discuss Question
Answer: Option B. -> vegetables
Answer: (b).vegetables
Question 58. Black mold rot is caused by
  1.    A.flavus
  2.    A. niger
  3.    Trichoderma
  4.    Trichothecium roseum
 Discuss Question
Answer: Option B. -> A. niger
Answer: (b).A. niger
Question 59. The predominant micro-organisms in frozen foods are
  1.    bacteria
  2.    micro-coccus
  3.    yeast and moulds
  4.    none of these
 Discuss Question
Answer: Option C. -> yeast and moulds
Answer: (c).yeast and moulds
Question 60. Concentrate of fruits and vegetable juices
  1.    favor the growth of A. niger and A. flavus species
  2.    favour the growth of yeast and of acid and sugar tolerant Leuconostoc and Lactobacillus species
  3.    favor the growth of Saprophytic bacteria
  4.    none of the above
 Discuss Question
Answer: Option B. -> favour the growth of yeast and of acid and sugar tolerant Leuconostoc and Lactobacillus species
Answer: (b).favour the growth of yeast and of acid and sugar tolerant Leuconostoc and Lactobacillus species

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