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Microbes in Aquatic Environment

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

Clostridium
Rhodospirillum
Chlorobium
Escherichia

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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
greater
lesser
approximately equal

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

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

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

Escherichia coli
Enterobacter aerogenes
Klebsiella pneumoniae
Salmonella typhi

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Microbes in Aquatic Environment
The amount of oxygen dissolved in hypolimnion water in the winter is __________ to/than the amount of oxygen dissolved in hypolimnion water in the summer

half
approximately equal to
greater
lesser

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Microbes in Aquatic Environment
Trickling filter comes under

secondary treatment
tertiary treatment
primary treatment
none of these

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