Question 1

Deduce why viruses are excluded from the ribosomal RNA-based tree of life.

Accepted Answer

A)  Some viruses contain multiple strands of RNA. 
B)  Their genetic elements cannot be sequenced. 
C)  They can infect other organisms, which complicates the genetic comparisons. 
D)  They lack ribosomal RNA (rRN
A) . 
A)  Some viruses contain multiple strands of RNA. 
B)  Their genetic elements cannot be sequenced. 
C)  They can infect other organisms, which complicates the genetic comparisons. 
D)  They lack ribosomal RNA (rRN
A) .

Question 2

A pure culture

Accepted Answer

A)  is sterile. 
B)  is a population of identical cells. 
C)  is made of a clearly defined chemical medium. 
D)  contains one microbial cell. 
A)  is sterile. 
B)  is a population of identical cells. 
C)  is made of a clearly defined chemical medium. 
D)  contains one microbial cell.

Question 3

Microbes that live at high temperatures in hot springs are ________.

Accepted Answer

A)  always Archaea. 
B)  also able to thrive at low temperatures. 
C)  called extremophiles. 
D)  rarely found. 
A)  always Archaea. 
B)  also able to thrive at low temperatures. 
C)  called extremophiles. 
D)  rarely found.

Question 4

Microbial ecology is the study of

Accepted Answer

A)  microbial processes in the rhizosphere that benefit plant growth. 
B)  the diversity and activities of microorganisms. 
C)  the grouping and classifying of microorganisms. 
D)  microorganisms in their natural environments. 
A)  microbial processes in the rhizosphere that benefit plant growth. 
B)  the diversity and activities of microorganisms. 
C)  the grouping and classifying of microorganisms. 
D)  microorganisms in their natural environments.

Question 5

Both environmental conditions and nutrient resources strongly influence the composition of a microbial community.

Accepted Answer

A) True 
 B)False

Question 6

The first documented description of a microorganism was of a ________ by ________.

Accepted Answer

A)  bacterium / Ferdinand Cohn 
B)  fungus / Robert Koch 
C)  mold / Robert Hooke 
D)  yeast / Martinus Beijerinck 
A)  bacterium / Ferdinand Cohn 
B)  fungus / Robert Koch 
C)  mold / Robert Hooke 
D)  yeast / Martinus Beijerinck

Question 7

How would the presence of endospores in Louis Pasteur's nutrient solutions have affected his conclusions about spontaneous generation?

Accepted Answer

Answers will vary, but ultimat

Question 8

The process whereby microorganisms are used to help clean up pollution created by human activities is known as

Accepted Answer

A)  bioaugmentation. 
B)  biodegradation. 
C)  bioengineering. 
D)  bioremediation. 
A)  bioaugmentation. 
B)  biodegradation. 
C)  bioengineering. 
D)  bioremediation.

Question 9

Which statement about the relationship between microbes and humans is FALSE?

Accepted Answer

A)  Most microbes are pathogenic. 
B)  Infectious disease is an important public health concern. 
C)  Bacteria in the digestive tract are important for digestion. 
D)  Microbes in root nodules fix nitrogen and allow plants to make nitrogen-rich products. 
A)  Most microbes are pathogenic. 
B)  Infectious disease is an important public health concern. 
C)  Bacteria in the digestive tract are important for digestion. 
D)  Microbes in root nodules fix nitrogen and allow plants to make nitrogen-rich products.

Exam 1: The Microbial World

Deduce why viruses are excluded from the ribosomal RNA-based tree of life.

A pure culture

Microbes that live at high temperatures in hot springs are ________.

Microbial ecology is the study of

Both environmental conditions and nutrient resources strongly influence the composition of a microbial community.

The first documented description of a microorganism was of a ________ by ________.

How would the presence of endospores in Louis Pasteur's nutrient solutions have affected his conclusions about spontaneous generation?

The process whereby microorganisms are used to help clean up pollution created by human activities is known as

Which statement about the relationship between microbes and humans is FALSE?

Microbial Cell Structure and Function

Microbial Metabolism

Molecular Information Flow and Protein Processing

Microbial Growth and Its Control

Microbial Regulatory Systems

Molecular Biology of Microbial Growth

Viruses and Their Replication

Microbial Systems Biology

Viral Genomics, Diversity, and Ecology

Genetics of Bacteria and Archaea

Biotechnology and Synthetic Biology

Microbial Evolution and Systematics

Metabolic Diversity of Microorganisms

Functional Diversity of Microorganisms

Diversity of Bacteria

Diversity of Archaea

Diversity of Microbial Eukarya

Taking the Measure of Microbial Systems

Microbial Ecosystems

Nutrient Cycles

Microbiology of the Built Environment

Microbial Symbioses

Microbial Symbioses with Humans

Microbial Infection and Pathogenesis

Innate Immunity: Broadly Specific Host Defenses

Adaptive Immunity: Highly Specific Host Defenses

Clinical Microbiology and Immunology

Epidemiology

Person-to-Person Bacterial and Viral Diseases

Vectorborne and Soilborne Bacterial and Viral Diseases

Waterborne and Foodborne Bacterial and Viral Diseases

Eukaryotic Pathogens: Fungi, Protozoans, and Helminths

Filters

The first documented description of a microorganism was of a by .