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MCQs

Total Questions : 282 | Page 7 of 29 pages
Question 61. Transgenic organisms are generally __________
  1.    Extinct organisms
  2.    Naturally occurring and endemic
  3.    Produced by traditional plant breeding technique
  4.    Produced by gene transfer technology
 Discuss Question
Answer: Option D. -> Produced by gene transfer technology
Answer: (d).Produced by gene transfer technology
Question 62. Dolly, the first animal produced by cloning is a __________
  1.    Cow
  2.    Sheep
  3.    Rat
  4.    Dog
 Discuss Question
Answer: Option B. -> Sheep
Answer: (b).Sheep
Question 63. Gene therapy is a technique preferred to cure inherited diseases by __________
  1.    Repairing the faulty gene
  2.    Introducing the correct copy of the gene
  3.    Adding new cells to the body
  4.    PCR
 Discuss Question
Answer: Option B. -> Introducing the correct copy of the gene
Answer: (b).Introducing the correct copy of the gene
Question 64. Rauolfia serpentine, to save this plant under the threat of extinction, which of the following techniques is useful?
  1.    Genetic engineering
  2.    In vitro culture
  3.    DNA fingerprinting
  4.    Hybridoma technology
 Discuss Question
Answer: Option B. -> In vitro culture
Answer: (b).In vitro culture
Question 65. Glucose is added to the tissue culture media as a/an __________
  1.    Carbon source
  2.    Growth regulator
  3.    Solidifying agent
  4.    Antibiotic
 Discuss Question
Answer: Option A. -> Carbon source
Answer: (a).Carbon source
Question 66. The lac repressor has which of the following DNA-binding motif?
  1.    Helix-turn-helix
  2.    Zinc finger
  3.    Homeodomain
  4.    Leucine zipper
 Discuss Question
Answer: Option A. -> Helix-turn-helix
Answer: (a).Helix-turn-helix
Question 67. Which of the following are the structural motifs that mediate protein-protein interactions?
  1.    Leucine zipper and basic helix-loop-helix
  2.    Homeodomain
  3.    Zinc finger
  4.    Helix-turn-helix
 Discuss Question
Answer: Option A. -> Leucine zipper and basic helix-loop-helix
Answer: (a).Leucine zipper and basic helix-loop-helix
Question 68. Which of the following is not required for the expression of genes in the lactose operon?
  1.    lacl gene product
  2.    cAMP
  3.    Allolactose
  4.    Adenylate cyclase
 Discuss Question
Answer: Option A. -> lacl gene product
Answer: (a).lacl gene product
Question 69. Which out of the following is not an example of inducible operon?
  1.    Lactose operon
  2.    Galactose operon
  3.    Maltose operon
  4.    Tryptophan operon
 Discuss Question
Answer: Option D. -> Tryptophan operon
Answer: (d).Tryptophan operon
Question 70. If lactose and glucose are provided in the growth medium of a culture of E. coli
  1.    Lactose operon is not transcribed
  2.    Lactose metabolism is favored
  3.    Both lactose and glucose are metabolized at same rate
  4.    Adenylate cyclase is activated
 Discuss Question
Answer: Option A. -> Lactose operon is not transcribed
Answer: (a).Lactose operon is not transcribed

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