MICROBES IN AQUATIC ENVIRONMENT QUIZ

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

approximately equal

greater

half

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.

Winogradsky

MUG

membrane filtration

most probable number

TRUE ANSWER : ?
YOUR ANSWER : ?

Chemical precipitation of phosphorus is

tertiary treatment

secondary treatment

both (a) and (b)

primary treatment

TRUE ANSWER : ?
YOUR ANSWER : ?

Hyphomycete fungi

both (a) and (b)

None of these

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

produce nonmotile tetaradiate conidia

TRUE ANSWER : ?
YOUR ANSWER : ?

All of the following species are considered coliforms except

Salmonella typhi

Enterobacter aerogenes

Klebsiella pneumoniae

Escherichia coli

TRUE ANSWER : ?
YOUR ANSWER : ?

Trickling filter comes under

none of these

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

microbial loop

Winogradsky column

Redfield ratio

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Fecal Streptococci

Clostridium perfringens

All of these

E.coli

TRUE ANSWER : ?
YOUR ANSWER : ?

Members of all of the following genera of bacteria typically are found in a maturing Winogradsky column except

Rhodospirillum

Chlorobium

Clostridium

Escherichia

TRUE ANSWER : ?
YOUR ANSWER : ?

Activated sludge undergoes

Primary treatment

Secondary treatment

any of these

Tertiary treatment

TRUE ANSWER : ?
YOUR ANSWER : ?

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