Environment & Ecology Practice Question›› General Science ››
Environmental Science
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Bioremediation and Bioassay
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Question 1
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Consider the following statements:
1. Bioremediation uses microorganisms to degrade water contaminants.
2. Bioassay measures the potency of contaminants in living animals.
3. Oilzapper can control the accidental flames from oil wells.
Which of the statements given above is/are correct?
(a) 1 only
(b) 1 and 2 only
(c) 1, 2 and 3
(d) 3 only
Explanation Statement 1 is correct: Bioremediation uses microorganisms (bacteria and fungi) to degrade the environment including water contaminants into less toxic forms. Microorganisms can be specifically designed for bioremediation using genetic engineering techniques in ex-situ and in-situ spaces.
Statement 2 is correct: Bioassay is the measure of potency of contaminants and comparing the magnitude of effects with that of a standard set of conditions. Observations of such pharmacological effects can be done on living animals (in-vivo) or tissues (in-vitro).
Statement 3 is not correct: Oilzapper is a bacterial consortium developed by TERI (The Energy and Resources Institute), that degrades crude oil and oily sludge into harmless CO2 and water. It is a bio-friendly and cost-effective way to clean up oil contamination in land and water. It cannot be used to control flames from oil wells.
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