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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
greater
half
lesser

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

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

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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.

greater
half
lesser
approximately equal

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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?

All of these
Clostridium perfringens
Fecal Streptococci
E.coli

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Microbes in Aquatic Environment
Coliforms are used as indicator organisms because

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

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

Klebsiella pneumoniae
Enterobacter aerogenes
Salmonella typhi
Escherichia coli

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