Exam 22: Microbes in Global Elemental Cycles

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What do wastewater treatment plants have in common with wetland filtration (purification)?

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Microbes using nitrogen as a terminal electron acceptor would be performing

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What evidence suggests that the biochemistry of life elsewhere would resemble that on Earth?

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Acid mine drainage is caused primarily by the microbial genus

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Which contaminant in water is especially prevalent in agricultural regions of the United States?

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Anaerobically, H₂S may be photolyzed to

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Why does the burning of fossil fuels have such a drastic impact on the atmospheric carbon reservoir?

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During wastewater treatment, the secondary treatment requires continual aeration to

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Which of the following is an anaerobic respiration reaction?

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Increased ________ is NOT needed to terraform Mars.

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Microbes participate in which step of wastewater treatment?

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Which of the following organisms does NOT play a major role in secondary wastewater treatment?

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Discuss the concept of iron fertilization to remove excess CO₂ from the atmosphere.

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In the anammox reaction, ________ is the electron donor and ________ is the electron acceptor.

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The NASA FLUXNET tower is used for sampling and monitoring

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What would happen if household wastewater was emptied into local receiving rivers without prior treatment?

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Predict the relative levels of biological oxygen demand (BOD) of water flowing into and out of a municipal wastewater treatment plant. Why is this difference desirable?

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Which of the following reservoirs contains the most rapidly cycled carbon?

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The elemental proportions in microbes are

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Which of the following does bacteria use for iron uptake?

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