MICROBES IN AQUATIC ENVIRONMENT QUIZ

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

TRUE ANSWER : ?
YOUR ANSWER : ?

Activated sludge undergoes

Secondary treatment

Tertiary treatment

any of these

Primary treatment

TRUE ANSWER : ?
YOUR ANSWER : ?

The sulfur pearl of Namibia, Thiomargarita namibiensis

stores high concentrations of nitrate in a huge internal vacuole which takes up 98% of the organisms volume

Both (a) and (b)

is the worlds smallest bacterium

is the worlds largest bacterium

TRUE ANSWER : ?
YOUR ANSWER : ?

Loss of carbon through the microbial loop in oligotrophic environments is __________ to/than the loss of carbon through the microbial loop in copiotrophic environments.

approximately equal

half

lesser

greater

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following species in water reveal the presence of fecal pollution of human or animal origin?

All of these

Clostridium perfringens

Fecal Streptococci

E.coli

TRUE ANSWER : ?
YOUR ANSWER : ?

Trickling filter comes under

tertiary treatment

none of these

secondary treatment

primary treatment

TRUE ANSWER : ?
YOUR ANSWER : ?

Chemical precipitation of phosphorus is

both (a) and (b)

tertiary treatment

primary treatment

secondary treatment

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Gibbs free energy

Redfield ratio

Winogradsky column

microbial loop

TRUE ANSWER : ?
YOUR ANSWER : ?

The rate of flux of oxygen in air is __________ to/than the rate of flux of oxygen in water.

lesser

approximately equal

greater

half

TRUE ANSWER : ?
YOUR ANSWER : ?

Removal of solids is generally considered as a

None of these

Tertiary treatment

Secondary treatment

Primary treatment

TRUE ANSWER : ?
YOUR ANSWER : ?

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