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MCQs

Total Questions : 139 | Page 11 of 14 pages
Question 101. A Halobacterium cell compensates for water loss by pumping which ions in cell?
  1.    K
  2.    O₂
  3.    H₂
  4.    NA
 Discuss Question
Answer: Option A. -> K
Answer: (a).K
Question 102. When a prokaryote takes up foreign DNA from surroundings its called
  1.    mutant
  2.    dead
  3.    transformed
  4.    transfected
 Discuss Question
Answer: Option C. -> transformed
Answer: (c).transformed
Question 103. Which of following bacteria is coil-shaped?
  1.    monococci
  2.    diplococci
  3.    spirochetes
  4.    spirilla
 Discuss Question
Answer: Option D. -> spirilla
Answer: (d).spirilla
Question 104. Which of following is an example of spirochetes?
  1.    Nongonococcal urethritis
  2.    Borrelia burgdorferi
  3.    Bdellovibrios
  4.    Thiomargarita namibiensis
 Discuss Question
Answer: Option B. -> Borrelia burgdorferi
Answer: (b).Borrelia burgdorferi
Question 105. Which of following structures is produced by help of F factor?
  1.    Pilli
  2.    filaments
  3.    hair
  4.    fimbriae
 Discuss Question
Answer: Option A. -> Pilli
Answer: (a).Pilli
Question 106. Bacteria obtain energy from which of following forms of sulfur?
  1.    h2s
  2.    hs2
  3.    sulphuric acid
  4.    sulphur nitrate
 Discuss Question
Answer: Option A. -> h2s
Answer: (a).h2s
Question 107. Sulfolobus is an example of which of following?
  1.    chemoautotroph
  2.    phototrophs
  3.    heterotrophs
  4.    halophiles
 Discuss Question
Answer: Option A. -> chemoautotroph
Answer: (a).chemoautotroph
Question 108. Which of following can be poisoned by oxygen?
  1.    Streptomyces
  2.    Borrelia burgdorferi
  3.    Leptospira
  4.    methanogens
 Discuss Question
Answer: Option D. -> methanogens
Answer: (d).methanogens
Question 109. What temperature is required to kill endospores?
  1.    121 °C
  2.    300 °C
  3.    500 °C
  4.    1000 °C
 Discuss Question
Answer: Option A. -> 121 °C
Answer: (a).121 °C
Question 110. Rhodobacter is an example of which of following
  1.    heterotrophs
  2.    Chemotrophs
  3.    autotrophs
  4.    phototrophs
 Discuss Question
Answer: Option A. -> heterotrophs
Answer: (a).heterotrophs

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