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MCQs

Total Questions : 139 | Page 7 of 14 pages
Question 61. ''R'' in R plasmids stands for what?
  1.    rumination
  2.    reason
  3.    retaliate
  4.    resistance
 Discuss Question
Answer: Option D. -> resistance
Answer: (d).resistance
Question 62. Horizontal gene transfer occurs from
  1.    one organism to another
  2.    replication
  3.    reproduction
  4.    ancestors
 Discuss Question
Answer: Option A. -> one organism to another
Answer: (a).one organism to another
Question 63. Which of following bacteria is not an example of spirochetes?
  1.    treponema pallidum
  2.    Borrelia burgdorferi
  3.    Leptospira
  4.    salmonella
 Discuss Question
Answer: Option D. -> salmonella
Answer: (d).salmonella
Question 64. Ammonium is oxidized to produce which of following by Nitrosomonas?
  1.    methyl
  2.    nitrogen
  3.    nitrite
  4.    nitrate
 Discuss Question
Answer: Option C. -> nitrite
Answer: (c).nitrite
Question 65. When phages carry DNA from one host to another its called
  1.    dead
  2.    transformed
  3.    transfected
  4.    transduction
 Discuss Question
Answer: Option D. -> transduction
Answer: (d).transduction
Question 66. An ecological relationship in which both participants benefit is called
  1.    mutualism
  2.    commensalism
  3.    parasitism
  4.    symbiosis
 Discuss Question
Answer: Option A. -> mutualism
Answer: (a).mutualism
Question 67. Why is an extreme thermophile found in hydrothermal vents named as 'strain 121'?
  1.    it can reproduce at 121 °C
  2.    it has 121 genes
  3.    it has 121 strains
  4.    it produces 121 types of proteins
 Discuss Question
Answer: Option A. -> it can reproduce at 121 °C
Answer: (a).it can reproduce at 121 °C
Question 68. The process in which the introns are removed from the messenger RNA precursor and exons are re-joined is referred to as
  1.    splicing
  2.    capping
  3.    polyadenylation
  4.    replication
 Discuss Question
Answer: Option A. -> splicing
Answer: (a).splicing
Question 69. RNA polymerase II is a protein-protein complex, that catalyzed the transcription of DNA to synthesize the precursor of
  1.    mRNA
  2.    snRNA
  3.    MicroRNA
  4.    all of above
 Discuss Question
Answer: Option D. -> all of above
Answer: (d).all of above
Question 70. Modifications of the 5' ends of eukaryotic mRNA is called
  1.    capping
  2.    polyadenylation
  3.    splicing
  4.    Transcription
 Discuss Question
Answer: Option A. -> capping
Answer: (a).capping

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