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MCQs

Total Questions : 241 | Page 4 of 25 pages
Question 31. Genetic material of bacteria is composed of, a single-stranded
  1.    Linear DNA
  2.    Ladder like DNA
  3.    Coiled DNA
  4.    Circular DNA
 Discuss Question
Answer: Option D. -> Circular DNA
Answer: (d).Circular DNA
Question 32. All 'RNA' viruses contain single-stranded 'RNA' except
  1.    Reovirus
  2.    Retrovirus
  3.    HIV
  4.    HBV
 Discuss Question
Answer: Option A. -> Reovirus
Answer: (a).Reovirus
Question 33. Mutations that are valuable in determining function of viral 'gene' is called
  1.    Substitution
  2.    Frameshift mutation
  3.    Conditional lethal mutation
  4.    Point mutation
 Discuss Question
Answer: Option C. -> Conditional lethal mutation
Answer: (c).Conditional lethal mutation
Question 34. Integration of viral 'DNA' into cell 'DNA' results in a structure named as
  1.    Viral genome
  2.    Prophage
  3.    Virion
  4.    Prion
 Discuss Question
Answer: Option B. -> Prophage
Answer: (b).Prophage
Question 35. Segment of 'RNA' that have both negative and positive polarity regions is known as
  1.    Neutral
  2.    Dipolar
  3.    Monopolar
  4.    Ambisense
 Discuss Question
Answer: Option D. -> Ambisense
Answer: (d).Ambisense
Question 36. Between two chromosomes exchange of 'gene' is called as
  1.    Interaction
  2.    Mutation
  3.    Recombination
  4.    Point mutation
 Discuss Question
Answer: Option C. -> Recombination
Answer: (c).Recombination
Question 37. Inability to replicate, in certain viruses, providing an ultimae advantage in the
  1.    Gene therapy
  2.    Drug therapy
  3.    Physiotherapy
  4.    Chemotherapy
 Discuss Question
Answer: Option A. -> Gene therapy
Answer: (a).Gene therapy
Question 38. If a cell is infected by a virus, calculated time to replicate it is approximately:
  1.    12 hours
  2.    10 hours
  3.    8 hours
  4.    4 hours
 Discuss Question
Answer: Option B. -> 10 hours
Answer: (b).10 hours
Question 39. Process, viruses or viral vectors, in combination with foreign viral envelope, producing proteins, known as
  1.    Genotyping
  2.    Pseudotyping
  3.    Phenotyping
  4.    Exchange
 Discuss Question
Answer: Option B. -> Pseudotyping
Answer: (b).Pseudotyping
Question 40. A sudden change in sequence of DNA or RNA, is called
  1.    Change
  2.    Alteration
  3.    Mutation
  4.    Transduction
 Discuss Question
Answer: Option C. -> Mutation
Answer: (c).Mutation

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