Exam 43: Applied Environmental Microbiology

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

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

The solubilization of metals from low-grade ores by microorganisms is called __________.

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

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

Removal of environmental pollutants using microorganisms is called __________.

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

Cryptosporidium is an important waterborne disease.This organism is a

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

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

Slow sand filtration effectively removes

Removal of 99% of the indicator organisms in drinking water will be sufficient to avoid disease transmission.

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

The biochemical oxygen demand (BOD)test is primarily a measure of carbon demand and should not include nitrogen oxidation demand.

Which of the following contributes to the removal of organic material in home sewage treatment system leach fields?

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

Rapid sand filtration,used in many water purification plants,is sufficient to ensure that Giardia will be consistently removed.

Filamentous organisms such as Sphaerotilus and Thiothrix can lower the efficiency of activated sludge processes by causing

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.

Molecular techniques using 16S rRNA gene targeted primers are now used routinely to detect coliforms in water.