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MCQs

Total Questions : 46 | Page 3 of 5 pages
Question 21. Using microorganisms to extract metals from ores and mine waste is called as?
  1.    Biomining
  2.    Bioleaching
  3.    Afforestation
  4.    Hydrolysis
 Discuss Question
Answer: Option A. -> Biomining
Answer: (a).Biomining
Question 22. Which of the following cannot methylate mercury?
  1.    E. coli
  2.    Bacillus
  3.    Clostridium
  4.    Oxygen
 Discuss Question
Answer: Option D. -> Oxygen
Answer: (d).Oxygen
Question 23. Intracellular machinery degrades metals.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 24. Which of the following resistance in bacteria is usually found in heavy metal contaminated sites?
  1.    Mercury
  2.    Copper
  3.    Nickle
  4.    Magnesium
 Discuss Question
Answer: Option A. -> Mercury
Answer: (a).Mercury
Question 25. The common feature of mercury resistance bacteria compared to the clinical isolates would be?
  1.    Absence of linkage to the drug resistance markers
  2.    Presence of linkage to the drug resistance markers
  3.    Presence of linkage to the antibiotic resistance markers
  4.    Absence of linkage to the antibiotic resistance markers
 Discuss Question
Answer: Option A. -> Absence of linkage to the drug resistance markers
Answer: (a).Absence of linkage to the drug resistance markers
Question 26. Which of the following is not a sign of heavy metal poisoning?
  1.    Abdominal pain
  2.    Cardiomyopathy
  3.    Numbness
  4.    Far sightedness
 Discuss Question
Answer: Option D. -> Far sightedness
Answer: (d).Far sightedness
Question 27. How does Bacteria develop resistance mechanisms?
  1.    Extracellular ligands
  2.    Intercellular ligands
  3.    Instructions by DNA
  4.    Integral proteins
 Discuss Question
Answer: Option C. -> Instructions by DNA
Answer: (c).Instructions by DNA
Question 28. How do heavy metals reach high localized concentration?
  1.    Bind to amino acids containing Sulfur
  2.    Bind to amino acids containing Nickle
  3.    Bind to amino acids containing Copper
  4.    Bind to amino acids containing Cadmium
 Discuss Question
Answer: Option A. -> Bind to amino acids containing Sulfur
Answer: (a).Bind to amino acids containing Sulfur
Question 29. Mercury resistance elements in bacteria are plasmid coded.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 30. Which of the following metal can inhibit bacterial growth by binding to proteins?
  1.    Zinc
  2.    Plants
  3.    Nitrogen
  4.    Vermicomposting
 Discuss Question
Answer: Option A. -> Zinc
Answer: (a).Zinc

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