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MCQs

Total Questions : 105 | Page 7 of 11 pages
Question 61. Which of the following is NOT a recombination system?
  1.    RecBCD
  2.    RecE
  3.    RecF
  4.    DnaF
 Discuss Question
Answer: Option D. -> DnaF
Answer: (d).DnaF
Question 62. Name the protein, which is involved in homologous recombination in E.coli?
  1.    Topoisomerase
  2.    Gyrase
  3.    Helicase
  4.    RecBCD enzyme
 Discuss Question
Answer: Option D. -> RecBCD enzyme
Answer: (d).RecBCD enzyme
Question 63. Name the phenomenon of allele replacement during recombination and DNA repair?
  1.    Replication
  2.    Mutation
  3.    Transversion
  4.    Gene conversion
 Discuss Question
Answer: Option D. -> Gene conversion
Answer: (d).Gene conversion
Question 64. The correction of changes in DNA by a set of process known as___________
  1.    Replication
  2.    DNA repair
  3.    Translation
  4.    Transcription
 Discuss Question
Answer: Option B. -> DNA repair
Answer: (b).DNA repair
Question 65. The genome can maintain its essential cellular function even without DNA repair.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 66. Name the repair system for UV mediated damage of DNA?
  1.    Exchange of homologous segments
  2.    DNA glycosylase
  3.    Nucleotide excision repair
  4.    Photoreactivation
 Discuss Question
Answer: Option D. -> Photoreactivation
Answer: (d).Photoreactivation
Question 67. Which of the following enzyme is used in photoreactivation process?
  1.    DNA ligase
  2.    DNA photolyase
  3.    DNA polymerase
  4.    Primase
 Discuss Question
Answer: Option B. -> DNA photolyase
Answer: (b).DNA photolyase
Question 68. Name the repair system which involves the removal of the damaged segment of DNA?
  1.    Recombinational repair
  2.    Direct repair
  3.    Excision repair
  4.    Mismatched repair
 Discuss Question
Answer: Option C. -> Excision repair
Answer: (c).Excision repair
Question 69. Name the enzyme which initiates base excision repair process?
  1.    RNA polymerase
  2.    DNA polymerase
  3.    DNA photolyase
  4.    DNA glycosylase
 Discuss Question
Answer: Option D. -> DNA glycosylase
Answer: (d).DNA glycosylase
Question 70. Which of the following enzyme works in the nucleotide excision repair?
  1.    DNA photolyase
  2.    ABC exinuclease
  3.    DNA glycosylase
  4.    RecA
 Discuss Question
Answer: Option B. -> ABC exinuclease
Answer: (b).ABC exinuclease

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