Question 1

You have isolated a bacterium that grows in a medium containing only inorganic nutrients. Ammonia is oxidized to a nitrate ion. This bacterium is

Accepted Answer

A)  gram- negative. 
B)  a photoheterotroph. 
C)  a photoautotroph 
D)  using anaerobic respiration. 
E)  a chemoautotroph. 
A)  gram- negative. 
B)  a photoheterotroph. 
C)  a photoautotroph 
D)  using anaerobic respiration. 
E)  a chemoautotroph.

Question 2

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

Question 3

Which of the following form conidiospores?

Accepted Answer

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

Question 4

Bacterial predators such as Bdellovibrio are members of the betaproteobacteria.

Accepted Answer

A) True 
 B)False

Question 5

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

Accepted Answer

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

Question 6

Two distinguishing factors of the epsilonproteobacteria that they are motile and microaerophilic.

Accepted Answer

A) True 
 B)False

Question 7

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

Question 8

Staphylococcus and Streptococcus can be easily differentiated in a laboratory by which one of the following?

Accepted Answer

A)  Gram stain reaction 
B)  cell shape 
C)  ability to cause disease 
D)  glucose fermentation 
E)  growth in high salt concentrations 
A)  Gram stain reaction 
B)  cell shape 
C)  ability to cause disease 
D)  glucose fermentation 
E)  growth in high salt concentrations

Question 9

All of the following bacteria are motile. Which does NOT have flagella?

Accepted Answer

A)  Salmonella 
B)  Pseudomonas 
C)  spirochetes 
D)  Escherichia 
E)  helical bacteria 
A)  Salmonella 
B)  Pseudomonas 
C)  spirochetes 
D)  Escherichia 
E)  helical bacteria

Question 10

Myxobacteria are classified as actinobacteria due to fungal- like lifestyle.

Accepted Answer

A) True 
 B)False

Question 11

Requirements for X and V factors are used to identify

Accepted Answer

A)  Haemophilus. 
B)  Pseudomonas. 
C)  Staphylococcus. 
D)  Escherichia. 
E)  Neisseria. 
A)  Haemophilus. 
B)  Pseudomonas. 
C)  Staphylococcus. 
D)  Escherichia. 
E)  Neisseria.

Question 12

The nonsulfur photosynthetic bacteria use organic compounds as

Accepted Answer

A)  carbon sources. 
B)  electron donors to reduce CO2. 
C)  oxygen sources. 
D)  energy sources. 
E)  electron acceptors. 
A)  carbon sources. 
B)  electron donors to reduce CO2. 
C)  oxygen sources. 
D)  energy sources. 
E)  electron acceptors.

Question 13

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 14

Salmonella, Shigella, Yersinia, and Serratia are all

Accepted Answer

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

Question 15

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

Accepted Answer

A) True 
 B)False

Question 16

Which of the following is the best reason to classify Streptococcus in the Lactobacillales?

Accepted Answer

A)  found in dairy products 
B)  Gram reaction 
C)  rRNA sequences 
D)  fermentation of lactose 
E)  morphology 
A)  found in dairy products 
B)  Gram reaction 
C)  rRNA sequences 
D)  fermentation of lactose 
E)  morphology

Question 17

Thiobacillus oxidizes inorganic sulfur compounds and reduces CO2. This bacterium is a

Accepted Answer

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

Question 18

Which of the following bacteria are responsible for more infections and more different kinds of infections?

Accepted Answer

A)  Streptococcus 
B)  Neisseria 
C)  Salmonella 
D)  Pseudomonas 
E)  Staphylococcus 
A)  Streptococcus 
B)  Neisseria 
C)  Salmonella 
D)  Pseudomonas 
E)  Staphylococcus

Question 19

Which of the following are found primarily in the intestines of humans?

Accepted Answer

A)  endospore- forming rods 
B)  facultatively anaerobic gram- negative rods 
C)  gram- negative aerobic rods and cocci 
D)  aerobic, helical bacteria 
E)  gram- positive cocci 
A)  endospore- forming rods 
B)  facultatively anaerobic gram- negative rods 
C)  gram- negative aerobic rods and cocci 
D)  aerobic, helical bacteria 
E)  gram- positive cocci

Question 20

The majority of bacterial species on Earth have not been successfully cultivated.

Accepted Answer

A) True 
 B)False

Exam 11: The Prokaryotes: Domains Bacteria and Archaea

You have isolated a bacterium that grows in a medium containing only inorganic nutrients. Ammonia is oxidized to a nitrate ion. This bacterium is

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?

Which of the following form conidiospores?

Bacterial predators such as Bdellovibrio are members of the betaproteobacteria.

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

Two distinguishing factors of the epsilonproteobacteria that they are motile and microaerophilic.

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

Staphylococcus and Streptococcus can be easily differentiated in a laboratory by which one of the following?

All of the following bacteria are motile. Which does NOT have flagella?

Myxobacteria are classified as actinobacteria due to fungal- like lifestyle.

Requirements for X and V factors are used to identify

The nonsulfur photosynthetic bacteria use organic compounds as

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

Salmonella, Shigella, Yersinia, and Serratia are all

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

Which of the following is the best reason to classify Streptococcus in the Lactobacillales?

Thiobacillus oxidizes inorganic sulfur compounds and reduces CO2. This bacterium is a

Which of the following bacteria are responsible for more infections and more different kinds of infections?

Which of the following are found primarily in the intestines of humans?

The majority of bacterial species on Earth have not been successfully cultivated.

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 Recombinant Dna

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 Diseases 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