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Microbes in Aquatic Environment

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

Escherichia coli
Klebsiella pneumoniae
Enterobacter aerogenes
Salmonella typhi

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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
Clostridium
Rhodospirillum
Escherichia

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Microbes in Aquatic Environment
Coliforms are used as indicator organisms because

they are present wherever enteric pathogens are present
both (a) and (b)
a testing procedure with great specificity is easy to perform
None of these

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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

greater
half
approximately equal to
lesser

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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
lesser
greater
approximately equal

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

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

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