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MCQs

Total Questions : 107 | Page 5 of 11 pages
Question 41. Given the DNA sequence ATTAAGGC, which sequence would be used by researchers as an antisense molecule?
  1.    TAATTCCG
  2.    AUUAAGGC
  3.    CGGAATTA
  4.    UAAUUCCG
 Discuss Question
Answer: Option B. -> AUUAAGGC
Question 42. Tomatoes exhibiting delayed ripening express antisense RNA against
  1.    sucrose phosphate synthase gene
  2.    ACC deaminase
  3.    glycerol 1 phosphate acyl transferase
  4.    polygalactouranase
 Discuss Question
Answer: Option B. -> ACC deaminase
Question 43. Resistance to glyphosphate in transgenic petunia plants has been developed by the transfer of
  1.    any of the above
  2.    gene for ALS (acetolactate synthase)
  3.    gene for GS (glutamine synthase)
  4.    gene for EPSPS(5-enol-pyruvyl shikimat 3 phosphate synthase)
 Discuss Question
Answer: Option D. -> gene for EPSPS(5-enol-pyruvyl shikimat 3 phosphate synthase)
Question 44. Which of the following compounds has been produced in transgenic plants to improve tolerance to salt stress and water deficit?
  1.    Sucrose
  2.    Octopine
  3.    Nicotine
  4.    Mannitol
 Discuss Question
Answer: Option D. -> Mannitol
Question 45. Expression of antisense RNA in transgenic plants is a general method used to
  1.    block the expression of virus coat protein genes
  2.    reduce or eliminate the expression of individual genes
  3.    eliminate the expression of all genes in a biochemical pathway
  4.    activate the expression of all genes in a biochemical pathway
 Discuss Question
Answer: Option B. -> reduce or eliminate the expression of individual genes
Question 46. Phosphinothricin acetyl transferase is encoded by
  1.    none of these
  2.    gene bxn in Klebsiella pneumoniae
  3.    bar gene in Streptomyces spp
  4.    both (a) and (b)
 Discuss Question
Answer: Option C. -> bar gene in Streptomyces spp
Question 47. Which of the following gene detoxify herbicide bronoxynil?
  1.    All of these
  2.    Nitrilase
  3.    Phosphinothricin acetyl transferase
  4.    Glutathione S-transferase (GST)
 Discuss Question
Answer: Option B. -> Nitrilase
Question 48. Which of the following is not a characteristic of a transgenic crop?
  1.    Bt insect resistance toxin
  2.    none of these
  3.    increased methionine content
  4.    herbicide resistance
 Discuss Question
Answer: Option B. -> none of these
Question 49. Reducing the expression of pectin methylesterase (PME) has resulted in
  1.    tomato fruit that will not ripen
  2.    plants with resistance to bacteria and fungi
  3.    tomato fruit that last longer before they become rotten
  4.    tomato juice that has higher viscosity
 Discuss Question
Answer: Option D. -> tomato juice that has higher viscosity
Question 50. For developing herbicide resistance in transgenic plants which of the following approach/(es) is/are used?
  1.    All of these
  2.    Target protein is overproduced
  3.    Target molecule is made insensitive to herbicide
  4.    A pathway should be introduced that detoxify the herbicide
 Discuss Question
Answer: Option A. -> All of these

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