MICROBES IN AQUATIC ENVIRONMENT QUIZ

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

half

greater

approximately equal

lesser

TRUE ANSWER : ?
YOUR ANSWER : ?

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

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; lakes

low oxygen diffusion environment; lakes

low oxygen diffusion environment; soils

high oxygen diffusion environment; soils

TRUE ANSWER : ?
YOUR ANSWER : ?

Chemical precipitation of phosphorus is

secondary treatment

both (a) and (b)

tertiary treatment

primary treatment

TRUE ANSWER : ?
YOUR ANSWER : ?

Hyphomycete fungi

both (a) and (b)

grow in leaves and the infected leaves are the preferred food source for some aquatic insects

produce nonmotile tetaradiate conidia

None of these

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

Redfield ratio

Gibbs free energy

microbial loop

Winogradsky column

TRUE ANSWER : ?
YOUR ANSWER : ?

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

greater

approximately equal to

lesser

half

TRUE ANSWER : ?
YOUR ANSWER : ?

All of the following species are considered coliforms except

Escherichia coli

Enterobacter aerogenes

Klebsiella pneumoniae

Salmonella typhi

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

Fecal Streptococci

E.coli

Clostridium perfringens

TRUE ANSWER : ?
YOUR ANSWER : ?

Trickling filter comes under

tertiary treatment

secondary treatment

none of these

primary treatment

TRUE ANSWER : ?
YOUR ANSWER : ?

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