MICROBES IN AQUATIC ENVIRONMENT QUIZ

Removal of solids is generally considered as a

Secondary treatment

None of these

Tertiary treatment

Primary treatment

TRUE ANSWER : ?
YOUR ANSWER : ?

All of the following species are considered coliforms except

Escherichia coli

Salmonella typhi

Enterobacter aerogenes

Klebsiella pneumoniae

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Clostridium perfringens

All of these

E.coli

Fecal Streptococci

TRUE ANSWER : ?
YOUR ANSWER : ?

Activated sludge undergoes

Secondary treatment

Tertiary treatment

any of these

Primary treatment

TRUE ANSWER : ?
YOUR ANSWER : ?

is an environment like where microorganisms are functioning in an extremely thin film of water and where oxygen-containing air is close to them.

high oxygen diffusion environment; soils

low oxygen diffusion environment; lakes

low oxygen diffusion environment; soils

high oxygen diffusion environment; lakes

TRUE ANSWER : ?
YOUR ANSWER : ?

Trickling filter comes under

tertiary treatment

secondary treatment

none of these

primary 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

Winogradsky column

microbial loop

Redfield ratio

TRUE ANSWER : ?
YOUR ANSWER : ?

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

half

lesser

approximately equal

greater

TRUE ANSWER : ?
YOUR ANSWER : ?

Coliforms are used as indicator organisms because

both (a) and (b)

they are present wherever enteric pathogens are present

None of these

a testing procedure with great specificity is easy to perform

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

is the worlds smallest bacterium

is the worlds largest bacterium

Both (a) and (b)

TRUE ANSWER : ?
YOUR ANSWER : ?