Question 1

In general, cyanobacteria prefer higher pH and temperature conditions than algae.

Accepted Answer

A) True 
 B)False

Question 2

The flux rate of oxygen through water is about one in ________ times less than its rate through air.

Accepted Answer

A)  10 
B)  100 
C)  1,000 
D)  10,000 
A)  10 
B)  100 
C)  1,000 
D)  10,000

Question 3

Silicobacter pomeroyi produces carbon monoxide dehydrogenases so that it can use carbon monoxide as a source of carbon.

Accepted Answer

A) True 
 B)False

Question 4

The genome of Pelagibacter ubique

Accepted Answer

A)  is the smallest one thus far sequenced for a non-parasitic bacterium. 
B)  contains no pseudogenes. 
C)  has a very limited number of nucleotides between coding regions 
D)  all of the choices 
A)  is the smallest one thus far sequenced for a non-parasitic bacterium. 
B)  contains no pseudogenes. 
C)  has a very limited number of nucleotides between coding regions 
D)  all of the choices

Question 5

In marine and freshwater environments, the penetration of sunlight and the mixing of nutrients, oxygen, and waste products are the dominant factors controlling the microbial community.

Accepted Answer

A) True 
 B)False

Question 6

The cyanobacterium Trichodesmium

Accepted Answer

A)  fixes N2 during the day. 
B)  fixes a significant amount of N2 in oceanic environments. 
C)  uses nitrite as a source of nitrogen. 
D)  is a spherical organism. 
A)  fixes N2 during the day. 
B)  fixes a significant amount of N2 in oceanic environments. 
C)  uses nitrite as a source of nitrogen. 
D)  is a spherical organism.

Question 7

In the open ocean,

Accepted Answer

A)  the relative abundance of Archaea versus Bacteria increases with depth. 
B)  the relative abundance of Archaea versus Bacteria decreases with depth. 
C)  Archaea are not present. 
D)  Archaea are only found in extreme environments such as near thermal vents. 
A)  the relative abundance of Archaea versus Bacteria increases with depth. 
B)  the relative abundance of Archaea versus Bacteria decreases with depth. 
C)  Archaea are not present. 
D)  Archaea are only found in extreme environments such as near thermal vents.

Question 8

In general, microbial growth in the open ocean is most limited by the availability of

Accepted Answer

A)  phosphorus 
B)  manganese 
C)  iron 
D)  nitrogen 
A)  phosphorus 
B)  manganese 
C)  iron 
D)  nitrogen

Question 9

The process in which diurnal oxygen shifts can occur in a river after organic matter is added is called

Accepted Answer

A)  self-reduction. 
B)  self-purification. 
C)  self-oxidation. 
D)  self-eutrophication. 
A)  self-reduction. 
B)  self-purification. 
C)  self-oxidation. 
D)  self-eutrophication.

Question 10

Most microbes that inhabit estuaries are

Accepted Answer

A)  halophilic. 
B)  halotolerant. 
C)  halophobic. 
D)  halovariable. 
A)  halophilic. 
B)  halotolerant. 
C)  halophobic. 
D)  halovariable.

Exam 28: Microorganisms in Marine and Freshwater Ecosystems

In general, cyanobacteria prefer higher pH and temperature conditions than algae.

The flux rate of oxygen through water is about one in ________ times less than its rate through air.

Silicobacter pomeroyi produces carbon monoxide dehydrogenases so that it can use carbon monoxide as a source of carbon.

The genome of Pelagibacter ubique

In marine and freshwater environments, the penetration of sunlight and the mixing of nutrients, oxygen, and waste products are the dominant factors controlling the microbial community.

The cyanobacterium Trichodesmium

In the open ocean,

In general, microbial growth in the open ocean is most limited by the availability of

The process in which diurnal oxygen shifts can occur in a river after organic matter is added is called

Most microbes that inhabit estuaries are

The Evolution of Microorganisms and Microbiology

The Study of Microbial Structure: Microscopy and Specimen Preparation

Bacteria and Archaea

Eukaryotic Cell Structure and Function

Viruses and Other Acellular Infectious Agents

Microbial Nutrition

Microbial Growth

Control of Microorganisms in the Environment

Introduction to Metabolism

Catabolism Energy Release and Conservation

Anabolism the Use of Energy in Biosynthesis

Genes Structure, Replication, and Expression

Microbial Genetics Regulation of Gene Expression

Microbial Genetics Mechanisms of Genetic Variation

Recombinant Dna Technology

Microbial Genomics

Microbial Taxonomy and the Evolution of Diversity

The Archaea

Bacteria the Deinococci and Nonproteobacteria Gram Negatives

Bacteria the Proteobacteria

Bacteria the Low G+C Gram Positives

Bacteria the High G+C Gram Positives

The Protists

The Fungi Eumycota

The Viruses

Biogeochemical Cycling

Methods in Microbial Ecology

Microorganisms in Terrestrial Ecosystems

Microbial Interactions

Infection and Pathogenicity

Nonspecific Innate Host Resistance

Specific Adaptive Immunity

Antimicrobial Chemotherapy

Clinical Microbiology and Immunology

Epidemiology and Public Health Microbiology

Human Diseases Caused by Viruses and Prions

Human Diseases Caused by Bacteria

Human Diseases Caused by Fungi and Protists

Microbiology of Food

Industrial Microbiology

Applied Environmental Microbiology

Filters