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MCQs

Total Questions : 107 | Page 10 of 11 pages
Question 91. . Resistance to glyphosphate in transgenic petunia plants has been 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 A. -> gene for EPSPS(5-enol-pyruvyl shikimat 3 phosphate synthase)
Question 92. . Which of the following compounds has been produced in transgenic plants to improve tolerance to salt stress and water deficit?
  1.    Sucrose
  2.    Mannitol
  3.    Nicotine
  4.    Octopine
 Discuss Question
Answer: Option B. -> Mannitol
Question 93. . 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
Question 94. . 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
Question 95. . Expression of antisense RNA in transgenic plants is a general method used to
  1.    activate the expression of all genes in a biochemical pathway
  2.    eliminate the expression of all genes in a biochemical pathway
  3.    block the expression of virus coat protein genes
  4.    reduce or eliminate the expression of individual genes
 Discuss Question
Answer: Option D. -> reduce or eliminate the expression of individual genes
Question 96. . Which of the following gene detoxify herbicide bronoxynil?
  1.    Nitrilase
  2.    Glutathione S-transferase (GST)
  3.    Phosphinothricin acetyl transferase
  4.    All of these
 Discuss Question
Answer: Option A. -> Nitrilase
Question 97. . Given the DNA sequence ATTAAGGC, which sequence would be used by researchers as an antisense molecule?
  1.    AUUAAGGC
  2.    UAAUUCCG
  3.    CGGAATTA
  4.    TAATTCCG
 Discuss Question
Answer: Option A. -> AUUAAGGC
Question 98. . Tomatoes exhibiting delayed ripening express antisense RNA against
  1.    glycerol 1 phosphate acyl transferase
  2.    polygalactouranase
  3.    ACC deaminase
  4.    sucrose phosphate synthase gene
 Discuss Question
Answer: Option C. -> ACC deaminase
Question 99. . For developing herbicide resistance in transgenic plants which of the following approach/(es) is/are used?
  1.    Target molecule is made insensitive to herbicide
  2.    Target protein is overproduced
  3.    A pathway should be introduced that detoxify the herbicide
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 100. . Phosphinothricin acetyl transferase is encoded by
  1.    gene bxn in Klebsiella pneumoniae
  2.    bar gene in Streptomyces spp
  3.    both (a) and (b)
  4.    none of these
 Discuss Question
Answer: Option B. -> bar gene in Streptomyces spp

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