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Microbes in Aquatic Environment

Microbes in Aquatic Environment
Trickling filter comes under

secondary treatment
none of these
primary treatment
tertiary treatment

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Microbes in Aquatic Environment
Members of all of the following genera of bacteria typically are found in a maturing Winogradsky column except

Chlorobium
Rhodospirillum
Escherichia
Clostridium

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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
is the worlds largest bacterium
Both (a) and (b)
is the worlds smallest bacterium

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

half
approximately equal
greater
lesser

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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?

Fecal Streptococci
All of these
Clostridium perfringens
E.coli

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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.

lesser
approximately equal
greater
half

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