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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.

half
greater
lesser
approximately equal

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

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

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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
membrane filtration
most probable number
MUG

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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

lesser
approximately equal to
half
greater

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Microbes in Aquatic Environment
Metabolism of dissolved organic material released by phytoplankton allows heterotrophic bacteria to become part of the particulate organic matter that is passed up the food web to be metabolized and released as mineral elements and CO2 at each transfer. This sentence describes the

microbial loop
Gibbs free energy
Winogradsky column
Redfield ratio

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

Secondary treatment
Tertiary treatment
Primary treatment
None of these

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