Question 1

Currently, no members of Archaea have been linked to human disease.

Accepted Answer

A) True 
 B)False

Question 2

Salmonella, Shigella, Yersinia, and Serratia are all

Accepted Answer

A)  gram-negative facultatively anaerobic rods. 
B)  gram-positive aerobic cocci. 
C)  fermentative. 
D)  pathogens. 
E)  endospore-forming bacteria. 
A)  gram-negative facultatively anaerobic rods. 
B)  gram-positive aerobic cocci. 
C)  fermentative. 
D)  pathogens. 
E)  endospore-forming bacteria.

Question 3

Actinomycetes differ from fungi in that actinomycetes

Accepted Answer

A)  lack a membrane-bounded nucleus. 
B)  are chemoheterotrophs. 
C)  cause disease. 
D)  are decomposers. 
E)  require light. 
A)  lack a membrane-bounded nucleus. 
B)  are chemoheterotrophs. 
C)  cause disease. 
D)  are decomposers. 
E)  require light.

Question 4

Thiobacillus oxidizes inorganic sulfur compounds and reduces Co2. This bacterium is a

Accepted Answer

A)  chemoheterotroph. 
B)  chemoautotroph. 
C)  gammaproteobacteria. 
D)  photoheterotroph. 
E)  photoautotroph. 
A)  chemoheterotroph. 
B)  chemoautotroph. 
C)  gammaproteobacteria. 
D)  photoheterotroph. 
E)  photoautotroph.

Question 5

Borrelia is classified as a spirochete because it

Accepted Answer

A)  is transmitted by ticks. 
B)  possesses an axial filament. 
C)  is a rod. 
D)  is a pathogen. 
E)  is aerobic. 
A)  is transmitted by ticks. 
B)  possesses an axial filament. 
C)  is a rod. 
D)  is a pathogen. 
E)  is aerobic.

Question 6

Which of the following bacteria is gram-negative?

Accepted Answer

A)  Bacillus 
B)  Mycobacterium 
C)  Treponema 
D)  Corynebacterium 
E)  Staphylococcus 
A)  Bacillus 
B)  Mycobacterium 
C)  Treponema 
D)  Corynebacterium 
E)  Staphylococcus

Question 7

Which of the following form conidiospores?

Accepted Answer

A)  endospore-forming gram-positive rods and cocci 
B)  rickettsias 
C)  anaerobic gram-negative cocci 
D)  actinomycetes and related organisms 
E)  spiral and curved bacteria 
A)  endospore-forming gram-positive rods and cocci 
B)  rickettsias 
C)  anaerobic gram-negative cocci 
D)  actinomycetes and related organisms 
E)  spiral and curved bacteria

Question 8

Rickettsias differ from chlamydias in that rickettsias

Accepted Answer

A)  are enterics. 
B)  are gram-negative. 
C)  are intracellular parasites. 
D)  form elementary bodies. 
E)  require an arthropod for transmission. 
A)  are enterics. 
B)  are gram-negative. 
C)  are intracellular parasites. 
D)  form elementary bodies. 
E)  require an arthropod for transmission.

Question 9

The human body is typically free of archaeal species.

Accepted Answer

A) True 
 B)False

Question 10

Which of the following pairs is mismatched?

Accepted Answer

A)  dissimilatory sulfate-reducing bacteria  produce H2S 
B)  Cytophaga  a gliding, nonfruiting bacterium 
C)  actinomycetes  reproduce by fragmentation 
D)  chemoautotrophic bacteria  fix atmospheric nitrogen 
E)  archaea  extremophiles 
A)  dissimilatory sulfate-reducing bacteria  produce H2S 
B)  Cytophaga  a gliding, nonfruiting bacterium 
C)  actinomycetes  reproduce by fragmentation 
D)  chemoautotrophic bacteria  fix atmospheric nitrogen 
E)  archaea  extremophiles

Question 11

Figure 11.1   What is group ʺc.ʺ in the key shown in Figure 11.1?

Accepted Answer

A)  spirochaetes 
B)  planctomycetes 
C)  chlamydiae 
D)  fusobacteria 
E)  bacteroidetes 
A)  spirochaetes 
B)  planctomycetes 
C)  chlamydiae 
D)  fusobacteria 
E)  bacteroidetes

Question 12

Which of the following genera is an anaerobic gram-negative rod?

Accepted Answer

A)  Escherichia 
B)  Treponema 
C)  Neisseria 
D)  Staphylococcus 
E)  Bacteroides 
A)  Escherichia 
B)  Treponema 
C)  Neisseria 
D)  Staphylococcus 
E)  Bacteroides

Question 13

A colleague proposes that the Archaea may be the oldest life forms currently inhabiting Earth. Do you agree? Explain.

Accepted Answer

While it is a widely accepted hypothesis

Question 14

Which of the following statements about the causative agent of Rocky Mountain spotted fever is FALSE?

Accepted Answer

A)  It is transmitted by ticks. 
B)  It is gram-negative. 
C)  It is found in soil and water. 
D)  It is in the genus Rickettsia. 
E)  It is an intracellular parasite. 
A)  It is transmitted by ticks. 
B)  It is gram-negative. 
C)  It is found in soil and water. 
D)  It is in the genus Rickettsia. 
E)  It is an intracellular parasite.

Question 15

Which one of the following does NOT belong with the others?

Accepted Answer

A)  Staphylococcus 
B)  Rickettsia 
C)  Wolbachia 
D)  Coxiella 
E)  Ehrlichia 
A)  Staphylococcus 
B)  Rickettsia 
C)  Wolbachia 
D)  Coxiella 
E)  Ehrlichia

Question 16

Bacteroides and Escherichia are both gram-negative rods found in the large intestine. Why are they in different phyla?

Accepted Answer

Bacteroides and Escherichia are indeed b

Question 17

Burkholderia was reclassified from the gammaproteobacteria to the betaproteobacteria because

Accepted Answer

A)  it causes infections in cystic fibrosis patients. 
B)  it is a gram-negative rod. 
C)  its rRNA sequence is similar to that of Neisseria. 
D)  it causes melioidosis. 
E)  it grows in disinfectants. 
A)  it causes infections in cystic fibrosis patients. 
B)  it is a gram-negative rod. 
C)  its rRNA sequence is similar to that of Neisseria. 
D)  it causes melioidosis. 
E)  it grows in disinfectants.

Question 18

All of the following bacteria are gram-positive. Which does NOT belong with the others?

Accepted Answer

A)  Gardnerella 
B)  Listeria 
C)  Corynebacterium 
D)  Actinomyces 
E)  Mycobacterium 
A)  Gardnerella 
B)  Listeria 
C)  Corynebacterium 
D)  Actinomyces 
E)  Mycobacterium

Question 19

You have isolated an aerobic gram-positive, endospore-forming bacterium that grows well on nutrient agar. To which of the following groups does it most likely belong?

Accepted Answer

A)  deltaproteobacteria 
B)  bacillales 
C)  phototrophic bacteria 
D)  gammaproteobacteria 
E)  The answer cannot be determined based on the information provided. 
A)  deltaproteobacteria 
B)  bacillales 
C)  phototrophic bacteria 
D)  gammaproteobacteria 
E)  The answer cannot be determined based on the information provided.

Question 20

The use of culture-independent techniques has increased our understanding of microbial diversity without cultivation. Therefore, do microbiologists still need to attempt to grow new microbial species? Explain.

Accepted Answer

Yes, microbiologists still need to attem

Exam 11: The Prokaryotes: Domains Bacteria and Archaea

Currently, no members of Archaea have been linked to human disease.

Salmonella, Shigella, Yersinia, and Serratia are all

Actinomycetes differ from fungi in that actinomycetes

Thiobacillus oxidizes inorganic sulfur compounds and reduces Co2. This bacterium is a

Borrelia is classified as a spirochete because it

Which of the following bacteria is gram-negative?

Which of the following form conidiospores?

Rickettsias differ from chlamydias in that rickettsias

The human body is typically free of archaeal species.

Which of the following pairs is mismatched?

Figure 11.1 What is group ʺc.ʺ in the key shown in Figure 11.1?

Which of the following genera is an anaerobic gram-negative rod?

A colleague proposes that the Archaea may be the oldest life forms currently inhabiting Earth. Do you agree? Explain.

Which of the following statements about the causative agent of Rocky Mountain spotted fever is FALSE?

Which one of the following does NOT belong with the others?

Bacteroides and Escherichia are both gram-negative rods found in the large intestine. Why are they in different phyla?

Burkholderia was reclassified from the gammaproteobacteria to the betaproteobacteria because

All of the following bacteria are gram-positive. Which does NOT belong with the others?

You have isolated an aerobic gram-positive, endospore-forming bacterium that grows well on nutrient agar. To which of the following groups does it most likely belong?

The use of culture-independent techniques has increased our understanding of microbial diversity without cultivation. Therefore, do microbiologists still need to attempt to grow new microbial species? Explain.

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 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 Disease of the Urinary and Reproductive Systems

Environmental Microbiology

Applied and Industrial Microbiology

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Thiobacillus oxidizes inorganic sulfur compounds and reduces Co₂. This bacterium is a