Exam 43: Applied Environmental Microbiology

Microbial fuel cells are an emerging technology whereby _________ are donated to an anode during heterotrophic bacterial respiration. or

Potable water

The membrane filter technique can be used in all waters and has completely replaced the MPN technique.

Biodegradation of oil in soil is difficult due to a lack of ______________,which is very expensive to introduce into the sediments.

In the biochemical oxygen demand (BOD)test,the factor that should limit biological activity is _________.

The presence-absence test is a modification of which test?

It is usually beneficial to add nitrogen when one attempts to stimulate hydrocarbon degradation in the ocean.

Cryptosporidium has recently become of concern because it is hard to remove from water supplies.

Which of these would not be a suitable use of microbial fuel cells?

In a microbial fuel cell,why are the organisms fed a rich diet of organic substrates?

In the total organic carbon (TOC)test,microorganisms are used to measure the levels of carbon in a water sample.

Coliforms and fecal coliform are often differentiated based on their responses to _________.

Which of the following is not an advantage of anaerobic sludge digestion?

In the testing of water for coliforms,the presumptive test involves detection of

Methods used to remove or destroy viruses from drinking water include

If a leach field floods it becomes anoxic and effective treatment ceases.

Why are contaminants such as TCEs and PCBs so difficult to remove using traditional methods?

Slow sand filtration effectively removes _________.

Reductive dehalogenation involves the removal of halogens,like chlorine or fluorine,while adding electrons at the same time.

Indicator organisms are added to drinking water to test whether the purification process is being carried out effectively.