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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

Chlorobium
Escherichia
Rhodospirillum
Clostridium

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Microbes in Aquatic Environment
Coliforms are used as indicator organisms because

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

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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.

approximately equal
half
greater
lesser

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

Enterobacter aerogenes
Salmonella typhi
Klebsiella pneumoniae
Escherichia 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
half
approximately equal
greater

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

Primary treatment
Secondary treatment
Tertiary treatment
None of these

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