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MCQs

Total Questions : 222 | Page 7 of 23 pages
Question 61. Which of the following is not true for microinjection technique that involves transfer of DNA into protoplast?
  1.    It is carried out with the help of micromanipulator
  2.    The recipient cells are immobilized on artificial support or artificially bound to substarate
  3.    It employs needle with diameter greater than cell diameter
  4.    all of the above
 Discuss Question
Answer: Option C. -> It employs needle with diameter greater than cell diameter
Answer: (c).It employs needle with diameter greater than cell diameter
Question 62. The direct repeats flanking the T-DNA of Agrobacterium tume-faciens are known as
  1.    cos site
  2.    flanking sequences
  3.    border sequences
  4.    transfer sequences
 Discuss Question
Answer: Option C. -> border sequences
Answer: (c).border sequences
Question 63. Virulent strains of Agrobacterium contain large Ti-plasmids, which are responsible for the DNA transfer and subsequent disease symptoms. It has been shown that Ti-plasmids contain
  1.    one set of sequence necessary for gene transfer
  2.    two sets of sequence necessary for gene transfer
  3.    three sets of sequence necessary for gene transfer
  4.    four sets of sequence necessary for gene transfer
 Discuss Question
Answer: Option B. -> two sets of sequence necessary for gene transfer
Answer: (b).two sets of sequence necessary for gene transfer
Question 64. Resistance to L-phosphinothrium in tobacco plants is developed by the transfer of
  1.    gene for EPSPS (5-enol-pyruvyl shikimat 3 phosphate synthase)
  2.    gene for ALS (acetolactate synthase)
  3.    gene for GS (glutamine synthase)
  4.    any of the above
 Discuss Question
Answer: Option C. -> gene for GS (glutamine synthase)
Answer: (c).gene for GS (glutamine synthase)
Question 65. The roots of a plant are converted into drug-producing structures in a process called
  1.    microcosm establishment
  2.    mibridization
  3.    bioremediation
  4.    rhizosecretion
 Discuss Question
Answer: Option D. -> rhizosecretion
Answer: (d).rhizosecretion
Question 66. Two genes from a bacterium (Alcaligenes eutrophus) and a cotton gene produce
  1.    a plastic
  2.    a vaccine against the bacterium
  3.    a pharmaceutical product
  4.    herbicide resistance
 Discuss Question
Answer: Option A. -> a plastic
Answer: (a).a plastic
Question 67. ACC demainase gene is responsible for
  1.    synthesis for ethylene
  2.    degradation of ACC an immediate precursor to ethylene
  3.    both (a) and (b)
  4.    synthesis of polygalactouranase
 Discuss Question
Answer: Option B. -> degradation of ACC an immediate precursor to ethylene
Answer: (b).degradation of ACC an immediate precursor to ethylene
Question 68. A __________ is a small laboratory set up to simulate conditions of a particular environment.
  1.    microcosm
  2.    mibridization
  3.    bioremediation
  4.    rhizosecretion
 Discuss Question
Answer: Option A. -> microcosm
Answer: (a).microcosm
Question 69. In a __________ protocol, bacteria with engineered abilities to detoxify pollutants are intentionally released in an area.
  1.    microcosm establishment
  2.    mibridization
  3.    bioremediation
  4.    rhizosecretion
 Discuss Question
Answer: Option C. -> bioremediation
Answer: (c).bioremediation
Question 70. Which tropical fruit crop has been successfully engineered to be protected against a lethal virus?
  1.    Passion fruit
  2.    Papaya
  3.    Mango
  4.    Lychee
 Discuss Question
Answer: Option B. -> Papaya
Answer: (b).Papaya

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