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MCQs

Total Questions : 139 | Page 4 of 14 pages
Question 31. Harmless bacteria living on skin of humans feeding off sebum have which of following ecological relationship?
  1.    mutualism
  2.    commensalism
  3.    parasitism
  4.    symbiosis
 Discuss Question
Answer: Option B. -> commensalism
Answer: (b).commensalism
Question 32. Which of following is an example of sulfur bacteria?
  1.    Nitrosomonas
  2.    agrobacterium
  3.    neisseria gonorrhoeae.
  4.    Thiomargarita namibiensis
 Discuss Question
Answer: Option D. -> Thiomargarita namibiensis
Answer: (d).Thiomargarita namibiensis
Question 33. Which of following has been used in producing transgenic plants?
  1.    Streptomyces
  2.    Borrelia burgdorferi
  3.    Leptospira
  4.    agrobacterium tumefaciens
 Discuss Question
Answer: Option D. -> agrobacterium tumefaciens
Answer: (d).agrobacterium tumefaciens
Question 34. Which of following bacteria cause syphilis?
  1.    treponema pallidum
  2.    salmonella
  3.    Bdellovibrios
  4.    Nongonococcal urethritis
 Discuss Question
Answer: Option A. -> treponema pallidum
Answer: (a).treponema pallidum
Question 35. Which of following disease is caused by Salmonella typhi?
  1.    typhoid
  2.    Lyme disease
  3.    tuberculosis
  4.    anthrax
 Discuss Question
Answer: Option A. -> typhoid
Answer: (a).typhoid
Question 36. Which of following are present in outer cell wall of gram-negative bacteria and are released when bacteria die?
  1.    exotoxins
  2.    endotoxins
  3.    lipopolysaccharide
  4.    proteoglycans
 Discuss Question
Answer: Option B. -> endotoxins
Answer: (b).endotoxins
Question 37. Which of following is contained by most of bacteria?
  1.    proteins
  2.    peptidoglycan
  3.    proteoglycan
  4.    sugars
 Discuss Question
Answer: Option B. -> peptidoglycan
Answer: (b).peptidoglycan
Question 38. Which of following is reproduced by E Coli?
  1.    binary fission
  2.    separation
  3.    duplication
  4.    reproduction
 Discuss Question
Answer: Option A. -> binary fission
Answer: (a).binary fission
Question 39. Cocci present in pairs are called
  1.    diplococci
  2.    streptococci
  3.    staphylococci
  4.    gonococci
 Discuss Question
Answer: Option A. -> diplococci
Answer: (a).diplococci
Question 40. When DNA is transferred between two individuals of same species its called
  1.    transformed
  2.    transfected
  3.    transduction
  4.    conjugation
 Discuss Question
Answer: Option D. -> conjugation
Answer: (d).conjugation

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