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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

Escherichia
Rhodospirillum
Chlorobium
Clostridium

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Microbes in Aquatic Environment
The sulfur pearl of Namibia, Thiomargarita namibiensis

is the worlds largest bacterium
is the worlds smallest bacterium
stores high concentrations of nitrate in a huge internal vacuole which takes up 98% of the organisms volume
Both (a) and (b)

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Microbes in Aquatic Environment
Trickling filter comes under

none of these
primary treatment
secondary treatment
tertiary treatment

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Microbes in Aquatic Environment
Chemical precipitation of phosphorus is

secondary treatment
primary treatment
tertiary treatment
both (a) and (b)

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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.

MUG
Winogradsky
membrane filtration
most probable number

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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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