Exam 42: Applied Environmental Microbiology

Fecal enterococci are increasingly being used as an indicator of fecal contamination in brackish and marine water because they die at a faster rate than fecal coliforms thus providing a more reliable indicator of pollution.

The enhancement of the degradation of recalcitrant compounds by the addition of an easily metabolized carbon source such as glucose is called

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

The inability of the "superbug" to successfully clean up oil spills in the ocean environment was mostly a matter of its inability to survive and compete in that environment.

Fecal coliforms are useful indicator organisms for the contamination of water by

Phytoremediation is the use of microorganisms to stimulate the extraction, degradation, adsorption, stabilization, or volatilization of soil contaminants.

Potable water

Slow sand filtration effectively removes

Primary treatment of sewage involves the use of which type of process?

Additions of a remediating microbe to natural environments can be more successful if

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

The acceleration of microbiological processes by the addition of known active microorganisms to soils, waters, or other complex systems is called __________.

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

Activated sludge is used in which sewage treatment step?

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

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

To enhance hydrocarbon degradation in marine environments, nutrient pellets can be used. These function most effectively if they are

All coliforms can grow at 44.5 $\degree$ C.

A septic tank will function effectively without a leach field.

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