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Microbes in Aquatic Environment

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

None of these
Tertiary treatment
Secondary treatment
Primary treatment

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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
greater
half
lesser

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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
membrane filtration
Winogradsky
most probable number

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

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

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Microbes in Aquatic Environment
Coliforms are used as indicator organisms because

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

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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

Redfield ratio
Gibbs free energy
microbial loop
Winogradsky column

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