OBJECTIVE LIFE SCIENCE
BIOTECHNOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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When using bioremediation to clean up toxic contaminated soil, what happens to the bacteria when the pollutants are cleaned up?
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The area is treated with antibiotics.
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The area is treated with concentrated oxygen.
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The bacteria run out of food and die off naturally.
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The bacteria are covered with fresh soil and they die due to a lack of oxygen.
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Explanation:
Detailed explanation-1: -Wastewater entering a treatment plant is aerated to provide oxygen to bacteria that degrade organic material and pollutants. Microbes consume the organic contaminants and bind the less soluble fractions, which can then be filtered off.
Detailed explanation-2: -The bioremediation process creates relatively few harmful byproducts (mainly due to the fact that contaminants and pollutants are converted into water and harmless gases like carbon dioxide).
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