Question 1

With increased levels of oxidizable materials,the biochemical oxygen demand (BOD)will

Accepted Answer

A)  increase. 
B)  decrease. 
C)  remain the same. 
D)  increase or decrease depending on the nature of the materials involved. 
A)  increase. 
B)  decrease. 
C)  remain the same. 
D)  increase or decrease depending on the nature of the materials involved.

Question 2

What is souring of crude oil and how does the petroleum industry control it?

Accepted Answer

The souring of crude oil occurs when oil

Question 3

While wastewater is in an activated sludge tank,much of the organic matter is

Accepted Answer

A)  oxidized. 
B)  adsorbed to the floc. 
C)  incorporated into microbial cells. 
D)  oxidized, adsorbed to the floc, and incorporated into microbial cells. 
A)  oxidized. 
B)  adsorbed to the floc. 
C)  incorporated into microbial cells. 
D)  oxidized, adsorbed to the floc, and incorporated into microbial cells.

Question 4

Secondary disinfection of drinking water is necessary to

Accepted Answer

A)  maintain sufficient residual in the water distribution system to inhibit microbial growth. 
B)  prevent the formation of biofilms on pipes in the water distribution system. 
C)  neutralize taste- and odor-producing organic compounds. 
D)  kill Cryptosporidium and other resistant pathogens. 
A)  maintain sufficient residual in the water distribution system to inhibit microbial growth. 
B)  prevent the formation of biofilms on pipes in the water distribution system. 
C)  neutralize taste- and odor-producing organic compounds. 
D)  kill Cryptosporidium and other resistant pathogens.

Question 5

Pyrite (FeS₂)is common in bituminous coal and metal ores and is a critical component of the microbial leaching of ores and acid mine drainage.

Accepted Answer

A) True 
 B)False

Question 6

Wastewater plants are usually constructed to handle both domestic and industrial wastes.

Accepted Answer

A) True 
 B)False

Question 7

Which process produces a gaseous product that can be used as fuel to provide heat or power for a wastewater treatment plant?

Accepted Answer

A)  trickling filter secondary wastewater treatment 
B)  aerobic secondary wastewater treatment 
C)  anaerobic secondary wastewater treatment 
D)  primary wastewater treatment 
A)  trickling filter secondary wastewater treatment 
B)  aerobic secondary wastewater treatment 
C)  anaerobic secondary wastewater treatment 
D)  primary wastewater treatment

Question 8

Although the sulfate-reducing bacteria are thought to be critical in the corrosion of metal structures,the mechanism of metal corrosion is not well understood.

Accepted Answer

A) True 
 B)False

Question 9

Describe floc formation in the activated sludge process.

Accepted Answer

During the activated sludge process,cont

Question 10

Treatment of drinking water by UV irradiation is effective at ________,but it does NOT remove ________.

Accepted Answer

A)  killing bacteria and eukaryotic pathogens / odor- and taste- altering organic compounds 
B)  killing viruses / bacteria and eukaryotic pathogens 
C)  removing order- and taste- altering organic compounds / viruses 
D)  killing bacteria / viruses and eukaryotic pathogens 
A)  killing bacteria and eukaryotic pathogens / odor- and taste- altering organic compounds 
B)  killing viruses / bacteria and eukaryotic pathogens 
C)  removing order- and taste- altering organic compounds / viruses 
D)  killing bacteria / viruses and eukaryotic pathogens

Question 11

Which product of anoxic sewage treatment can be used to heat and power an entire water treatment facility?

Accepted Answer

A)  CO₂ 
B)  H₂ 
C)  CH₄ 
D)  O₂ 
A)  CO₂ 
B)  H₂ 
C)  CH₄ 
D)  O₂

Question 12

What microbial processes are involved in the bioremediation of organic pollutants such as hydrocarbons and the bioremediation of inorganic pollutants such as uranium? What are the end products of bioremediation for hydrocarbons and uranium?

Accepted Answer

The bioremediation of hydrocarbons is ge

Question 13

Crown corrosion of concrete wastewater distribution systems is the result of

Accepted Answer

A)  acidic fermentation products reacting with the gypsum in the concrete. 
B)  sulfate reduction in the sewage and sulfide oxidation in the oxic headspace above. 
C)  fungal growth in the concrete. 
D)  rapid iron reduction coupled to pyrite dissolution. 
A)  acidic fermentation products reacting with the gypsum in the concrete. 
B)  sulfate reduction in the sewage and sulfide oxidation in the oxic headspace above. 
C)  fungal growth in the concrete. 
D)  rapid iron reduction coupled to pyrite dissolution.

Question 14

Potable water is NOT safe for human consumption.

Accepted Answer

A) True 
 B)False

Question 15

Which treatment method(s)are used in primary wastewater treatment?

Accepted Answer

A)  biological 
B)  chemical 
C)  physical separation 
D)  biological, chemical, and physical separation 
A)  biological 
B)  chemical 
C)  physical separation 
D)  biological, chemical, and physical separation

Question 16

Chlorine is consumed when it reacts with organic materials.

Accepted Answer

A) True 
 B)False

Question 17

Subway air and water distribution systems harbor dangerous levels of pathogenic microorganisms.

Accepted Answer

A) True 
 B)False

Question 18

Secondary treatment may be aerobic or anoxic.

Accepted Answer

A) True 
 B)False

Question 19

In water,MOST taste- and odor-producing compounds are inorganic in nature.

Accepted Answer

A) True 
 B)False

Question 20

Bioremediation of uranium depends on metal-reducing bacteria to change the oxidation state of the uranium to form insoluble uranium compounds.

Accepted Answer

A) True 
 B)False

Exam 21: Microbiology of the Built Environment

With increased levels of oxidizable materials,the biochemical oxygen demand (BOD)will

What is souring of crude oil and how does the petroleum industry control it?

While wastewater is in an activated sludge tank,much of the organic matter is

Secondary disinfection of drinking water is necessary to

Pyrite (FeS₂)is common in bituminous coal and metal ores and is a critical component of the microbial leaching of ores and acid mine drainage.

Wastewater plants are usually constructed to handle both domestic and industrial wastes.

Which process produces a gaseous product that can be used as fuel to provide heat or power for a wastewater treatment plant?

Although the sulfate-reducing bacteria are thought to be critical in the corrosion of metal structures,the mechanism of metal corrosion is not well understood.

Describe floc formation in the activated sludge process.

Treatment of drinking water by UV irradiation is effective at ________,but it does NOT remove ________.

Which product of anoxic sewage treatment can be used to heat and power an entire water treatment facility?

What microbial processes are involved in the bioremediation of organic pollutants such as hydrocarbons and the bioremediation of inorganic pollutants such as uranium? What are the end products of bioremediation for hydrocarbons and uranium?

Crown corrosion of concrete wastewater distribution systems is the result of

Potable water is NOT safe for human consumption.

Which treatment method(s)are used in primary wastewater treatment?

Chlorine is consumed when it reacts with organic materials.

Subway air and water distribution systems harbor dangerous levels of pathogenic microorganisms.

Secondary treatment may be aerobic or anoxic.

In water,MOST taste- and odor-producing compounds are inorganic in nature.

Bioremediation of uranium depends on metal-reducing bacteria to change the oxidation state of the uranium to form insoluble uranium compounds.

Microorganisms and Microbiology

Microbial Cell Structure and Function

Microbial Metabolism

Molecular Biology

Microbial Growth and Control

Microbial Genomics

Metabolic Regulation

Viruses and Virology

Viral Genomes and Diversity

Genetics of Bacteria and Archaea

Genetic Engineering and Biotechnology

Microbial Evolution and Systematics

Metabolic Diversity of Microorganisms

Functional Diversity of Bacteria

Diversity of Bacteria

Diversity of Archaea

Diversity of Eukaryotic Microorganisms

Methods in Microbial Ecology

Microbial Ecosystems

Nutrient Cycles

Microbial Symbioses

Microbial Interactions With Humans

Immunity and Host Defense

Immune Mechanisms

Molecular Immunology

Diagnostic Microbiology

Epidemiology

Person-To-Person Bacterial and Viral Diseases

Vectorborne and Soilborne Bacterial and Viral Diseases

Water and Food As Vehicles of Bacterial Diseases

Eukaryotic Pathogens: Fungal and Parasitic Diseases

Filters

Treatment of drinking water by UV irradiation is effective at ,but it does NOT remove .