Question 1

The dense growth of algae in an algal bloom leads to increased oxygen levels in lakes that enhance the habitat for fish.

Accepted Answer

A) True 
 B)False

Question 2

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

Accepted Answer

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

Question 3

In freshwater lakes and ponds, the majority of photosynthetic microbes are located in the zone(s).

Accepted Answer

A)  benthic 
B)  littoral 
C)  profundal 
D)  limnetic 
E)  benthic and profundal 
A)  benthic 
B)  littoral 
C)  profundal 
D)  limnetic 
E)  benthic and profundal

Question 4

Which of the following do NOT fix atmospheric nitrogen?

Accepted Answer

A)  cyanobacteria 
B)  mycorrhizae 
C)  lichens 
D)  Rhizobium 
E)  Azotobacter 
A)  cyanobacteria 
B)  mycorrhizae 
C)  lichens 
D)  Rhizobium 
E)  Azotobacter

Question 5

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 6

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

Accepted Answer

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

Question 7

All of the following organisms are involved in carbon fixation EXCEPT

Accepted Answer

A)  cyanobacteria. 
B)  mycorrhizae. 
C)  green and purple sulfur bacteria. 
D)  lichens. 
E)  algae. 
A)  cyanobacteria. 
B)  mycorrhizae. 
C)  green and purple sulfur bacteria. 
D)  lichens. 
E)  algae.

Question 8

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

Accepted Answer

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

Question 9

NH₃ → NO₂-

Accepted Answer

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

Question 10

Which wastewater treatment process produces BOD-containing effluent used for irrigation?

Accepted Answer

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

Question 11

Nitrogen fixation by bacteria occurs only in the root nodules of leguminous plants.

Accepted Answer

A) True 
 B)False

The dense growth of algae in an algal bloom leads to increased oxygen levels in lakes that enhance the habitat for fish.

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

In freshwater lakes and ponds, the majority of photosynthetic microbes are located in the zone(s).

Which of the following do NOT fix atmospheric nitrogen?

Bioremediation of petroleum

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

All of the following organisms are involved in carbon fixation EXCEPT

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

NH₃ → NO₂-

Which wastewater treatment process produces BOD-containing effluent used for irrigation?

Nitrogen fixation by bacteria occurs only in the root nodules of leguminous plants.

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 Dna Technology

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

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 Disease of the Urinary and Reproductive Systems

Applied and Industrial Microbiology

Innate Immunity: Nonspecific Defenses of the Host

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Exam 27: Environmental Microbiology

The dense growth of algae in an algal bloom leads to increased oxygen levels in lakes that enhance the habitat for fish.

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

In freshwater lakes and ponds, the majority of photosynthetic microbes are located in the zone(s).

Which of the following do NOT fix atmospheric nitrogen?

Bioremediation of petroleum

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

All of the following organisms are involved in carbon fixation EXCEPT

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

NH₃ → NO₂-

Which wastewater treatment process produces BOD-containing effluent used for irrigation?

Nitrogen fixation by bacteria occurs only in the root nodules of leguminous plants.

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 Dna Technology

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

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 Disease of the Urinary and Reproductive Systems

Applied and Industrial Microbiology

Innate Immunity: Nonspecific Defenses of the Host

Filters