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MCQs

Total Questions : 139 | Page 13 of 14 pages
Question 121. From which of following phototroph organisms obtain energy?
  1.    light
  2.    oxygen
  3.    sulphur
  4.    bacteria
 Discuss Question
Answer: Option A. -> light
Answer: (a).light
Question 122. Which of following bacteria play a part in nitrogen recycling?
  1.    rhizobium
  2.    Nitrosomonas
  3.    agrobacterium
  4.    e coli
 Discuss Question
Answer: Option B. -> Nitrosomonas
Answer: (b).Nitrosomonas
Question 123. Cyanobacteria is an example of which of following?
  1.    phototrophs
  2.    heterotrophs
  3.    Chemotrophs
  4.    autotrophs
 Discuss Question
Answer: Option A. -> phototrophs
Answer: (a).phototrophs
Question 124. Which of following diseases is caused by Bacillus anthracis?
  1.    flu
  2.    common cold
  3.    tuberculosis
  4.    anthrax
 Discuss Question
Answer: Option D. -> anthrax
Answer: (d).anthrax
Question 125. How long is diameter of Thiomargarita namibiensis?
  1.    750 um
  2.    100 um
  3.    10 um
  4.    5000um
 Discuss Question
Answer: Option A. -> 750 um
Answer: (a).750 um
Question 126. Halophiles can survive in which of following extreme conditions?
  1.    methane
  2.    heat
  3.    lack of oxygen
  4.    high salinity
 Discuss Question
Answer: Option D. -> high salinity
Answer: (d).high salinity
Question 127. Which of following disease in humans is caused by bacteria Campylobacter?
  1.    damage to neurons
  2.    blood poisoning
  3.    stomach ulcer
  4.    neurodegeneration
 Discuss Question
Answer: Option B. -> blood poisoning
Answer: (b).blood poisoning
Question 128. Which of following does not have a circular chromosome present in them?
  1.    bacteria
  2.    archaea
  3.    animals
  4.    none of above
 Discuss Question
Answer: Option C. -> animals
Answer: (c).animals
Question 129. What adaptations do most thermophile archaea have to protect their DNA from extreme heat?
  1.    biochemical modification in DNA
  2.    fragmented DNA
  3.    sheared DNA
  4.    larger DNA
 Discuss Question
Answer: Option A. -> biochemical modification in DNA
Answer: (a).biochemical modification in DNA
Question 130. Which of following bacteria are responsible for causing cholera?
  1.    salmonella
  2.    neisseria gonorrhoeae.
  3.    Thiomargarita namibiensis
  4.    vibrio cholerae
 Discuss Question
Answer: Option D. -> vibrio cholerae
Answer: (d).vibrio cholerae

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