Question 1

NH3  -NO2-

Accepted Answer

A)  takes place under aerobic conditions. 
B)  takes place under anaerobic conditions. 
C)  The amount of oxygen does not make any difference. 
A)  takes place under aerobic conditions. 
B)  takes place under anaerobic conditions. 
C)  The amount of oxygen does not make any difference.

Question 2

The release of phosphate- containing detergents into a river would

Accepted Answer

A)  improve the water quality. 
B)  increase algal growth. 
C)  kill algae. 
D)  kill bacteria. 
E)  None of the answers is correct. 
A)  improve the water quality. 
B)  increase algal growth. 
C)  kill algae. 
D)  kill bacteria. 
E)  None of the answers is correct.

Question 3

All of the following are habitats for extremophiles EXCEPT

Accepted Answer

A)  100°C water. 
B)  a salt- evaporating pond. 
C)  the Atlantic Ocean. 
D)  an acid mine wash. 
E)  inside rock. 
A)  100°C water. 
B)  a salt- evaporating pond. 
C)  the Atlantic Ocean. 
D)  an acid mine wash. 
E)  inside rock.

Question 4

Figure 27.1
  
-Which step in Figure 27.1 represents the following reaction: amino acid (- NH2) -NH3?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  IV 
E)  V 
A)  I 
B)  II 
C)  III 
D)  IV 
E)  V

Question 5

Which of the following terms describes NO3-  -NO2-  -N2O -N2?

Accepted Answer

A)  nitrogen fixation 
B)  anaerobic respiration 
C)  nitrification 
D)  denitrification 
E)  ammonification 
A)  nitrogen fixation 
B)  anaerobic respiration 
C)  nitrification 
D)  denitrification 
E)  ammonification

Question 6

Figure 27.1
  
-Nitrification is beneficial to farmers. It is represented by which step in Figure 27.1?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  IV 
E)  V 
A)  I 
B)  II 
C)  III 
D)  IV 
E)  V

Question 7

Which one of the following processes in sewage treatment requires bacterial metabolism?

Accepted Answer

A)  sedimentation 
B)  primary treatment 
C)  removal of BOD 
D)  chlorination 
E)  None of the answers is correct. 
A)  sedimentation 
B)  primary treatment 
C)  removal of BOD 
D)  chlorination 
E)  None of the answers is correct.

Question 8

Drinking water supplies are routinely tested for the presence of

Accepted Answer

A)  Vibrio. 
B)  Giardia. 
C)  fecal coliforms. 
D)  fecal viruses. 
E)  Cryptosporidium. 
A)  Vibrio. 
B)  Giardia. 
C)  fecal coliforms. 
D)  fecal viruses. 
E)  Cryptosporidium.

Question 9

In water treatment, the purpose of flocculation is to remove microbes, such as Giardia and
Cryptosporidium.

Accepted Answer

A) True 
 B)False

Question 10

The product of which process contains the highest BOD?

Accepted Answer

A)  primary sewage treatment 
B)  tertiary sewage treatment 
C)  water treatment 
D)  anaerobic sludge digestion 
E)  secondary sewage treatment 
A)  primary sewage treatment 
B)  tertiary sewage treatment 
C)  water treatment 
D)  anaerobic sludge digestion 
E)  secondary sewage treatment

Question 11

Which wastewater treatment process is responsible for removal of most of the BOD in sewage?

Accepted Answer

A)  tertiary sewage treatment 
B)  secondary sewage treatment 
C)  water treatment 
D)  anaerobic sludge digestion 
E)  primary sewage treatment 
A)  tertiary sewage treatment 
B)  secondary sewage treatment 
C)  water treatment 
D)  anaerobic sludge digestion 
E)  primary sewage treatment

Question 12

Adding untreated sewage to a freshwater lake would cause the biochemical oxygen demand to

Accepted Answer

A)  decrease. 
B)  increase. 
C)  stay the same. 
D)  The answer cannot be determined based on the information provided. 
A)  decrease. 
B)  increase. 
C)  stay the same. 
D)  The answer cannot be determined based on the information provided.

Question 13

Bioremediation of petroleum

Accepted Answer

A)  takes place under aerobic conditions. 
B)  takes place under anaerobic conditions. 
C)  The amount of oxygen does not make any difference. 
A)  takes place under aerobic conditions. 
B)  takes place under anaerobic conditions. 
C)  The amount of oxygen does not make any difference.

Question 14

What stage of sewage treatment produces methane?

Accepted Answer

A)  sludge digestion 
B)  primary treatment 
C)  secondary treatment 
D)  tertiary treatment 
E)  None of the stages of sewage treatment produce methane. 
A)  sludge digestion 
B)  primary treatment 
C)  secondary treatment 
D)  tertiary treatment 
E)  None of the stages of sewage treatment produce methane.

Question 15

In the ONPG and MUG test for fecal coliforms, a sample that is positive for E. coli will be

Accepted Answer

A)  negative for ONPG; non- fluorescent in UV light. 
B)  positive for ONPG; fluorescent in UV light. 
C)  negative for ONPG; fluorescent in UV light. 
D)  positive for ONPG; non- fluorescent in UV light. 
A)  negative for ONPG; non- fluorescent in UV light. 
B)  positive for ONPG; fluorescent in UV light. 
C)  negative for ONPG; fluorescent in UV light. 
D)  positive for ONPG; non- fluorescent in UV light.

Question 16

Bacteria that emit light can be used as biosensors because they

Accepted Answer

A)  migrate to hazardous chemical. 
B)  have the lux gene. 
C)  do not emit light in the presence of a hazardous chemical. 
D)  have FMN. 
E)  degrade hazardous chemicals. 
A)  migrate to hazardous chemical. 
B)  have the lux gene. 
C)  do not emit light in the presence of a hazardous chemical. 
D)  have FMN. 
E)  degrade hazardous chemicals.

Question 17

Biochemical oxygen demand is a measure of the

Accepted Answer

A)  amount of organic matter present in a water sample. 
B)  amount of oxygen present in a water sample. 
C)  amount of undissolved solid matter present in a water sample. 
D)  number of bacteria present in a water sample. 
E)  amount of nitrogen in a water sample. 
A)  amount of organic matter present in a water sample. 
B)  amount of oxygen present in a water sample. 
C)  amount of undissolved solid matter present in a water sample. 
D)  number of bacteria present in a water sample. 
E)  amount of nitrogen in a water sample.

Exam 27: Environmental Microbiology

NH3 -NO2-

The release of phosphate- containing detergents into a river would

All of the following are habitats for extremophiles EXCEPT

Figure 27.1 -Which step in Figure 27.1 represents the following reaction: amino acid (- NH2) -NH3?

Which of the following terms describes NO3- -NO2- -N2O -N2?

Figure 27.1 -Nitrification is beneficial to farmers. It is represented by which step in Figure 27.1?

Which one of the following processes in sewage treatment requires bacterial metabolism?

Drinking water supplies are routinely tested for the presence of

In water treatment, the purpose of flocculation is to remove microbes, such as Giardia and Cryptosporidium.

The product of which process contains the highest BOD?

Which wastewater treatment process is responsible for removal of most of the BOD in sewage?

Adding untreated sewage to a freshwater lake would cause the biochemical oxygen demand to

Bioremediation of petroleum

What stage of sewage treatment produces methane?

In the ONPG and MUG test for fecal coliforms, a sample that is positive for E. coli will be

Bacteria that emit light can be used as biosensors because they

Biochemical oxygen demand is a measure of the

The Microbial World and You

Chemical Principles

Observing Microorganisms Through a Microscope

Functional Anatomy of Prokaryotic and Eukaryotic Cells

Microbial Metabolism

Microbial Growth

The Control of Microbial Growth

Microbial Genetics

Biotechnology and Recombinant Dna

Classification of Microorganisms

The Prokaryotes: Domains Bacteria and Archaea

The Eukaryotes: Fungi, Algae, Protozoa, and Helminths

Viruses, Viroids, and Prions

Principles of Disease and Epidemiology

Microbial Mechanisms of Pathogenicity

Innate Immunity: Nonspecific Defenses of the Host

Adaptive Immunity: Specific Defenses of the Host

Practical Applications of Immunology

Disorders Associated With the Immune System

Antimicrobial Drugs

Microbial Diseases of the Skin and Eyes

Microbial Diseases of the Nervous System

Microbial Diseases of the Cardiovascular and Lymphatic Systems

Microbial Diseases of the Respiratory System

Microbial Diseases of the Digestive System

Microbial Diseases of the Urinary and Reproductive Systems

Applied and Industrial Microbiology

Filters

NH₃-NO₂^-

Figure 27.1 -Which step in Figure 27.1 represents the following reaction: amino acid (- NH₂) -NH₃?

Which of the following terms describes NO₃^--NO₂^--N₂O -N₂?