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Microbes in Aquatic Environment

Microbes in Aquatic Environment
The rate of flux of oxygen in air is __________ to/than the rate of flux of oxygen in water.

approximately equal
half
greater
lesser

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Microbes in Aquatic Environment
Activated sludge undergoes

Secondary treatment
Primary treatment
Tertiary treatment
any of these

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Microbes in Aquatic Environment
Loss of carbon through the microbial loop in oligotrophic environments is __________ to/than the loss of carbon through the microbial loop in copiotrophic environments.

approximately equal
half
lesser
greater

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Microbes in Aquatic Environment
Which of the following species in water reveal the presence of fecal pollution of human or animal origin?

Clostridium perfringens
E.coli
All of these
Fecal Streptococci

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Microbes in Aquatic Environment
The sulfur pearl of Namibia, Thiomargarita namibiensis

stores high concentrations of nitrate in a huge internal vacuole which takes up 98% of the organisms volume
Both (a) and (b)
is the worlds largest bacterium
is the worlds smallest bacterium

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Microbes in Aquatic Environment
Chemical precipitation of phosphorus is

secondary treatment
tertiary treatment
primary treatment
both (a) and (b)

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