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MICROBES IN AQUATIC ENVIRONMENT

Microbes in Aquatic Environment
The Redfield ratio is an index of concentration of

carbon, phosphorous and sulfur
carbon, hydrogen and oxygen
nitrogen, potassium and iron
carbon, nitrogen and phosphorous

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Microbes in Aquatic Environment
Removal of solids is generally considered as a

None of these
Tertiary treatment
Secondary treatment
Primary treatment

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Microbes in Aquatic Environment
All of the following species are considered coliforms except

Enterobacter aerogenes
Klebsiella pneumoniae
Escherichia coli
Salmonella typhi

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

is the worlds smallest bacterium
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)

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Microbes in Aquatic Environment
Chemical precipitation of phosphorus is

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

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