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MCQs

Total Questions : 59 | Page 5 of 6 pages
Question 41. Transformation with micro injection is which kind of transformation?
  1.    Physical
  2.    Chemical
  3.    Electroporation
  4.    Natural
 Discuss Question
Answer: Option A. -> Physical
Answer: (a).Physical
Question 42. For the process of transformation to take place a bacterial cell must be in a state of ____________
  1.    Stability
  2.    Competence
  3.    Localization
  4.    Horizontal
 Discuss Question
Answer: Option B. -> Competence
Answer: (b).Competence
Question 43. What should be the minimum weight of DNA that is required for a successful transformation?
  1.    1000 Daltons
  2.    100,000 Daltons
  3.    300,000 daltons
  4.    8 million daltons
 Discuss Question
Answer: Option C. -> 300,000 daltons
Answer: (c).300,000 daltons
Question 44. When does S. pneumoniae becomes competent for transformation?
  1.    Lag phase
  2.    Log phase
  3.    Exponential phase
  4.    Stationery phase
 Discuss Question
Answer: Option C. -> Exponential phase
Answer: (c).Exponential phase
Question 45. Which enzyme cleaves the DNA?
  1.    Endonucleases
  2.    Polymerases
  3.    Ligases
  4.    Lyases
 Discuss Question
Answer: Option A. -> Endonucleases
Answer: (a).Endonucleases
Question 46. In which of the following organism transformation occurs by the help of membrane vesicles?
  1.    S. pneumoniae
  2.    H. influenzae
  3.    E. colli
  4.    M. tuberculosis
 Discuss Question
Answer: Option B. -> H. influenzae
Answer: (b).H. influenzae
Question 47. Artificial transformation in the laboratory is carried out by which of the chemical?
  1.    Sodium chloride
  2.    Magnesium chloride
  3.    Calcium chloride
  4.    Potassium chloride
 Discuss Question
Answer: Option C. -> Calcium chloride
Answer: (c).Calcium chloride
Question 48. It is tough to transform with plasmid DNA.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 49. Which of the following path of transformation leads to the lysis of the parent cell?
  1.    Lysogenic
  2.    Lytic
  3.    Lysogenic and lytic pathway
  4.    Inductive
 Discuss Question
Answer: Option B. -> Lytic
Answer: (b).Lytic
Question 50. Who releases the plasmid encoded proteins required for adhering.
  1.    Donor cell
  2.    Recipient cell
  3.    F+ cell
  4.    F- cell
 Discuss Question
Answer: Option A. -> Donor cell
Answer: (a).Donor cell

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