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Biotechnology

ENVIRONMENTAL PROTECTION MCQs

Total Questions : 44

Page 1 of 5 pages
Question 1. Which of the following can be used for the removal of color from the effluents of pulp mill?
  1.    Coriolus versicolor entrapped in calcium alginate beads
  2.    Phanerochaete chrysosporium
  3.    Both (a) and (b)
  4.    Nitrosomonas europaen
 Discuss Question
Answer is Option C. -> Both (a) and (b)
Answer: (c).Both (a) and (b)
Question 2. Which of the following microorganisms leach metals out of rock ores and can accumulate silver?
  1.    Pseudomonas aeruginosa
  2.    Thiobacillus
  3.    Pseudomonas putida
  4.    Zoogloea ramigera
 Discuss Question
Answer is Option B. -> Thiobacillus
Answer: (b).Thiobacillus
Question 3. Inundation involves use of a/an
  1.    large number of organisms over a short time to suppress/destroy a population
  2.    organism over a short time to suppress/destroy a population
  3.    large number of organisms over a long time to suppress/destroy a population
  4.    organism over a long time to suppress/destroy a population
 Discuss Question
Answer is Option A. -> large number of organisms over a short time to suppress/destroy a population
Answer: (a).large number of organisms over a short time to suppress/destroy a population
Question 4. Which of the following have been used to oxidize ammonia and to prevent algal growth?
  1.    growth of hypomicrobium in presence of added methanol
  2.    Micrococcus denitrificans cells encapsulated in liquid membranes
  3.    Both (a) and (b)
  4.    Nitrosomonas europaen
 Discuss Question
Answer is Option D. -> Nitrosomonas europaen
Answer: (d).Nitrosomonas europaen
Question 5. Milbemycin is known to exhibit a broad spectrum of activity against
  1.    agricultural pests
  2.    agricultural herbs
  3.    agricultural insects
  4.    all of these
 Discuss Question
Answer is Option A. -> agricultural pests
Answer: (a).agricultural pests
Question 6. Klinefelter syndrome is a manifestation of which chromosome aneuploidy?
  1.    XXX
  2.    XYY
  3.    XXY
  4.    None of these
 Discuss Question
Answer is Option C. -> XXY
Answer: (c).XXY
Question 7. Which of the modification in hemoglobin is the cause of sickle cell anemia?
  1.    A mutation in the beta chain
  2.    A deletion in the beta chain
  3.    Replacement of the B chain by D chain
  4.    None of the above
 Discuss Question
Answer is Option A. -> A mutation in the beta chain
Answer: (a).A mutation in the beta chain
Question 8. What is the defective enzyme in the glycogen storage Von Gierke's disease?
  1.    Phosphorylase
  2.    Phosphofructokinase
  3.    Glucose-6-phosphatase
  4.    None of the above
 Discuss Question
Answer is Option C. -> Glucose-6-phosphatase
Answer: (c).Glucose-6-phosphatase
Question 9. Methotrexate is toxic to human cells because it inhibits
  1.    formation of CTP from UTP
  2.    reduction of H2 folate to H4 folate
  3.    synthesis of PRPP
  4.    none of the above
 Discuss Question
Answer is Option B. -> reduction of H2 folate to H4 folate
Answer: (b).reduction of H2 folate to H4 folate
Question 10. During sickle cell anemia which of the following takes place?
  1.    Glutamine change to valine
  2.    Valine change to glutamine
  3.    Aspartic acid change to glutamic acid
  4.    Glutamic acid change to aspartic acid
 Discuss Question
Answer is Option A. -> Glutamine change to valine
Answer: (a).Glutamine change to valine
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