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Total Questions : 67 | Page 6 of 7 pages
Question 51. Protein factories of bacteria are
  1.    mesosomes
  2.    ribosomes
  3.    spores
  4.    plasmids
 Discuss Question
Answer: Option B. -> ribosomes
Answer: (b).ribosomes
Question 52. Sterilization is done by use of
  1.    x-rays
  2.    beta rays
  3.    gamma rays
  4.    alpha rays
 Discuss Question
Answer: Option C. -> gamma rays
Answer: (c).gamma rays
Question 53. Example of rod-shaped viruses include
  1.    Influenza virus
  2.    Bacteriophages
  3.    Tobacco mosaic virus
  4.    Norwalk virus
 Discuss Question
Answer: Option C. -> Tobacco mosaic virus
Answer: (c).Tobacco mosaic virus
Question 54. Tadpole shaped viruses are largely
  1.    tobacco mosaic virus
  2.    bacteriophages
  3.    influenza virus
  4.    may cause death
 Discuss Question
Answer: Option B. -> bacteriophages
Answer: (b).bacteriophages
Question 55. Under suitable conditions, the mycelia threads grow
  1.    in the host cells
  2.    undergo binary fissions
  3.    grow over the substratum
  4.    form spores for later reproduction
 Discuss Question
Answer: Option C. -> grow over the substratum
Answer: (c).grow over the substratum
Question 56. Viruses attacking the bacterial cells are
  1.    bacterioplasts
  2.    bacteriocytes
  3.    bacteriophages
  4.    saprophytes
 Discuss Question
Answer: Option C. -> bacteriophages
Answer: (c).bacteriophages
Question 57. Viruses can only be destroyed by
  1.    antibodies present in blood of host's body
  2.    white blood cells present in host's body
  3.    red blood cells present in host's body
  4.    antibodies and white blood cells present in host's body
 Discuss Question
Answer: Option D. -> antibodies and white blood cells present in host's body
Answer: (d).antibodies and white blood cells present in host's body
Question 58. Bacteria reproduces asexually by process of
  1.    multiple fission
  2.    budding
  3.    binary fission
  4.    trinary fusion
 Discuss Question
Answer: Option B. -> budding
Answer: (b).budding
Question 59. Flagella respond to chemical signals by movement with help of flagella, this behavior is called as
  1.    chemotaxis
  2.    phototaxis
  3.    thermotaxis
  4.    hypotaxis
 Discuss Question
Answer: Option A. -> chemotaxis
Answer: (a).chemotaxis
Question 60. If there is a tuft of flagella on both two poles of bacteria, it is called as
  1.    Amphitrichous
  2.    lophotrichous
  3.    monotrichous
  4.    peritrichous
 Discuss Question
Answer: Option A. -> Amphitrichous
Answer: (a).Amphitrichous

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