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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.

lesser
greater
approximately equal
half

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Microbes in Aquatic Environment
Because it can be used with a variety of media and allow a resuscitation step the __________ technique has become the common and often preferred method of evaluating the microbiological characteristics of water.

Winogradsky
MUG
most probable number
membrane filtration

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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

Escherichia
Chlorobium
Clostridium
Rhodospirillum

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

Klebsiella pneumoniae
Salmonella typhi
Escherichia coli
Enterobacter aerogenes

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Microbes in Aquatic Environment
Activated sludge undergoes

Secondary treatment
any of these
Primary treatment
Tertiary treatment

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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
Fecal Streptococci
Clostridium perfringens
E.coli

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