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MCQs

Total Questions : 41 | Page 4 of 5 pages
Question 31. . Which of the following is incorrect?
  1.    Mammalian cells are larger and more complex than microorganisms
  2.    Their growth rate is very fast compared to microorganisms
  3.    Mammalian cells are fragile
  4.    Most animal cells only grow when attached to surface
 Discuss Question
Answer: Option B. -> Their growth rate is very fast compared to microorganisms
Question 32. . The archaebacterium Halobacterium, an extreme halophile, and Sulfolobus, a thermoacidophile, can be cultured in the presence of antibiotics such as streptomycin and chloramphenicol because
  1.    they contain ether-linked isoprenoids in their plasma membrane
  2.    they lack murein in their cell wall
  3.    they contain 80S, as opposed to 70S, ribosomes
  4.    all of the above
 Discuss Question
Answer: Option B. -> they lack murein in their cell wall
Question 33. . The isolation of the gonorrhoea - causing organisms, Neisseria gonorrhoeae,from a clinical specimen is facilitated by the use of media containing
  1.    cellulose
  2.    certain antibiotics
  3.    succinate
  4.    none of these
 Discuss Question
Answer: Option B. -> certain antibiotics
Question 34. . Anchorage -dependent cells require
  1.    wettable surface for growth
  2.    dry surface for growth
  3.    either (a) or (b)
  4.    nothing to do with the surface
 Discuss Question
Answer: Option A. -> wettable surface for growth
Question 35. . Radical shifts in pH can be prevented by incorporating
  1.    a buffer
  2.    an oxidizing agent
  3.    a reducing agent
  4.    any of these
 Discuss Question
Answer: Option A. -> a buffer
Question 36. . Stringent anaerobes can be grown in a media by taking special measure as
  1.    boiling the media for several minutes
  2.    addition of cysteine
  3.    passing through oxygen-free nitrogen
  4.    any of these
 Discuss Question
Answer: Option D. -> any of these
Question 37. . The archaebacterium Halobacterium, an extreme halophile, and Sulfolobus, a thermoacidophile, can be cultured in the presence of antibiotics such as streptomycin and chloramphenicol because
  1.    they contain ether-linked isoprenoids in their plasma membrane
  2.    they lack murein in their cell wall
  3.    they contain 80S, as opposed to 70S, ribosomes
  4.    all of the above
 Discuss Question
Answer: Option B. -> they lack murein in their cell wall
Question 38. . Anchorage -dependent cells require
  1.    wettable surface for growth
  2.    dry surface for growth
  3.    either (a) or (b)
  4.    nothing to do with the surface
 Discuss Question
Answer: Option A. -> wettable surface for growth
Question 39. . The isolation of the gonorrhoea - causing organisms, Neisseria gonorrhoeae,from a clinical specimen is facilitated by the use of media containing
  1.    cellulose
  2.    certain antibiotics
  3.    succinate
  4.    none of these
 Discuss Question
Answer: Option B. -> certain antibiotics
Question 40. . Radical shifts in pH can be prevented by incorporating
  1.    a buffer
  2.    an oxidizing agent
  3.    a reducing agent
  4.    any of these
 Discuss Question
Answer: Option A. -> a buffer

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