1. To eliminate tricholoethylene (TCE) at a toxic waste site, scientists manipul

Question

1. To eliminate tricholoethylene (TCE) at a toxic waste site, scientists manipulated the environment to enhance bioremediation by

Using methane to stimulate methanotroph growth, leading to co-metabolism of TCE.

Using methane to stimulate methanogen growth, leading to fixation of TCE.

Using carbon dioxide to stimulate autotroph growth, leading to co- metabolism of TCE.

Using carbon dioxide to stimulate autophototroph growth, fixing the carbon within TCE.

Pumping in chlorophyll to allow pigmented aerobes to co-stimulate TCE oxidation.

2. Suppose Pfizer (the pharmaceutical company) has an accident at its plant that manufactures the antibiotic, ciprofloxacin (Cipro). Cipro leaches into the soil around the manufacturing plant. Some soil bacteria are known to degrade Cipro despite the fact it is not a naturally- occurring compound. You discover that the addition of inorganic phosphate to the soil speeds up the degradation of the antibiotic. Addition of inorganic phosphate to the soil around the entire plant is an example of:

Bioremediation.

Co-metabolism.

Biostimulation.

All of (a., b., and c.) above are correct.

Only (a.) and (c.) above are correct.

3. For the following four questions, use the options below as often as you wish to match the activity to the microbial species:

Nitrogenase used to break nitrogen gas (N ).

Denitrification of nitrate/nitrite.

Oxidation of ammonia.

Fixation of nitrogen by high energy photos.

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Nitrospira species.

Clostridium species.

Pseudomonas species.

Nitrobacter species.

Explanation / Answer

Answer:- Option A

Explanation:- Trichloroethylene TCE is toxic waste and is removed from environment by Using methane to stimulate methanotroph growth, leading to co-metabolism of TCE.

Answers:- Biostimulation.

Explanation:- bio stimulation involves activation of bacteria by modification of environment to speed up bioremediation process.

Answers:-

Nitrogenase used to break nitrogen gas (N ).———-Nitrobacter sp

Denitrification of nitrate/nitrite.—————Pseudomonas species.

Oxidation of ammonia.————————Nitrobacter sp

Fixation of nitrogen by high energy photos.————Clostridium sp

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