Question 1

The Blood Falls ecosystem is driven by microbes that reduce ________ and others that oxidize ________.

Accepted Answer

A)  nitrogen; iron 
B)  phosphorus; nitrogen 
C)  iron; sulfur 
D)  sulfur; nitrogen 
E)  carbon; sulfur 
A)  nitrogen; iron 
B)  phosphorus; nitrogen 
C)  iron; sulfur 
D)  sulfur; nitrogen 
E)  carbon; sulfur

Question 2

Anaerobically, H₂S may be photolyzed to

Accepted Answer

A)  sulfate. 
B)  sulfite. 
C)  sulfur dioxide. 
D)  sulfuric acid. 
E)  elemental sulfur. 
A)  sulfate. 
B)  sulfite. 
C)  sulfur dioxide. 
D)  sulfuric acid. 
E)  elemental sulfur.

Question 3

Aeration of an environment containing microbes actively producing methane will

Accepted Answer

A)  increase methane release. 
B)  decrease methane release. 
C)  not affect methane release. 
D)  increase nitrous oxide release. 
E)  increase dinitrogen release. 
A)  increase methane release. 
B)  decrease methane release. 
C)  not affect methane release. 
D)  increase nitrous oxide release. 
E)  increase dinitrogen release.

Question 4

Acid mine drainage is caused primarily by the microbial genus

Accepted Answer

A)  Thalassiosira. 
B)  Leptothrix. 
C)  Prochlorococcus. 
D)  Acidithiobacillus. 
E)  Desulfovibrio. 
A)  Thalassiosira. 
B)  Leptothrix. 
C)  Prochlorococcus. 
D)  Acidithiobacillus. 
E)  Desulfovibrio.

Question 5

Some bacteria are responsible for degrading concrete. How do they accomplish this?

Accepted Answer

In a concrete sewer pipe, the alternatio

Question 6

Describe the difference between a source, sink, and reservoir of an element.

Accepted Answer

A location within the biosphere that con

Question 7

The sink of an element in the ecosystem

Accepted Answer

A)  is the reservoir to which it returns during cycling. 
B)  is the most accessible reservoir of that element. 
C)  renders the element inaccessible. 
D)  releases the element into the subsurface. 
E)  is the source of the element for living organisms. 
A)  is the reservoir to which it returns during cycling. 
B)  is the most accessible reservoir of that element. 
C)  renders the element inaccessible. 
D)  releases the element into the subsurface. 
E)  is the source of the element for living organisms.

Question 8

Predict the relative levels of biological oxygen demand (BOD) of water flowing into and out of a municipal wastewater treatment plant. Why is this difference desirable?

Accepted Answer

BOD is the total amount of dissolved oxy

Question 9

The release of CO₂ by human industry has/is ________ the rate of CO₂ fixation globally.

Accepted Answer

A)  equal to 
B)  tripled 
C)  outpaced 
D)  far less than 
E)  decreased 
A)  equal to 
B)  tripled 
C)  outpaced 
D)  far less than 
E)  decreased

Question 10

If an oligotrophic marine system has low concentrations of both nitrogen and phosphorus, it is said to be

Accepted Answer

A)  eutrophic. 
B)  polluted. 
C)  high BOD. 
D)  colimited. 
E)  hypoxic. 
A)  eutrophic. 
B)  polluted. 
C)  high BOD. 
D)  colimited. 
E)  hypoxic.

The Blood Falls ecosystem is driven by microbes that reduce and others that oxidize .

Anaerobically, H₂S may be photolyzed to

Aeration of an environment containing microbes actively producing methane will

Acid mine drainage is caused primarily by the microbial genus

Some bacteria are responsible for degrading concrete. How do they accomplish this?

Describe the difference between a source, sink, and reservoir of an element.

The sink of an element in the ecosystem

Predict the relative levels of biological oxygen demand (BOD) of water flowing into and out of a municipal wastewater treatment plant. Why is this difference desirable?

The release of CO₂ by human industry has/is ________ the rate of CO₂ fixation globally.

If an oligotrophic marine system has low concentrations of both nitrogen and phosphorus, it is said to be

Microbial Life: Origin and Discovery

Observing the Microbial Cell

Cell Structure and Function

Bacterial Culture, Growth, and Development

Environmental Influences and Control of Microbial Growth

Viruses

Genomes and Chromosomes

Transcription, Translation, and Bioinformatics

Gene Transfer, Mutations, and Genome Evolution

Molecular Regulation

Viral Molecular Biology

Biotechniques and Synthetic Biology

Energetics and Catabolism

Electron Flow in Organotrophy, Lithotrophy, and Phototrophy

Biosynthesis

Food and Industrial Microbiology

Origins and Evolution

Bacterial Diversity

Archaeal Diversity

Eukaryotic Diversity

Microbial Ecology

Human Microbiota and Innate Immunity

The Adaptive Immune Response

Microbial Pathogenesis

Microbial Diseases

Antimicrobial Therapy

Clinical Microbiology and Epidemiology

Filters

Exam 22: Microbes in Global Elemental Cycles

The Blood Falls ecosystem is driven by microbes that reduce ________ and others that oxidize ________.

Anaerobically, H₂S may be photolyzed to

Aeration of an environment containing microbes actively producing methane will

Acid mine drainage is caused primarily by the microbial genus

Some bacteria are responsible for degrading concrete. How do they accomplish this?

Describe the difference between a source, sink, and reservoir of an element.

The sink of an element in the ecosystem

Predict the relative levels of biological oxygen demand (BOD) of water flowing into and out of a municipal wastewater treatment plant. Why is this difference desirable?

The release of CO₂ by human industry has/is ________ the rate of CO₂ fixation globally.

If an oligotrophic marine system has low concentrations of both nitrogen and phosphorus, it is said to be

Microbial Life: Origin and Discovery

Observing the Microbial Cell

Cell Structure and Function

Bacterial Culture, Growth, and Development

Environmental Influences and Control of Microbial Growth

Viruses

Genomes and Chromosomes

Transcription, Translation, and Bioinformatics

Gene Transfer, Mutations, and Genome Evolution

Molecular Regulation

Viral Molecular Biology

Biotechniques and Synthetic Biology

Energetics and Catabolism

Electron Flow in Organotrophy, Lithotrophy, and Phototrophy

Biosynthesis

Food and Industrial Microbiology

Origins and Evolution

Bacterial Diversity

Archaeal Diversity

Eukaryotic Diversity

Microbial Ecology

Human Microbiota and Innate Immunity

The Adaptive Immune Response

Microbial Pathogenesis

Microbial Diseases

Antimicrobial Therapy

Clinical Microbiology and Epidemiology

Filters

The Blood Falls ecosystem is driven by microbes that reduce and others that oxidize .