Question 1

The deinococci can be categorized as extremophiles.

Accepted Answer

A) True 
 B)False

Question 2

The nonsulfur photosynthetic bacteria use organic compounds as

Accepted Answer

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

Question 3

Which of the following bacteria is gram-negative?

Accepted Answer

A)   Bacillus
B)   Mycobacterium
C)   Treponema
D)   Corynebacterium
E)   StaphylococcusF) A) and B)
G) A) and E)

Question 4

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

Accepted Answer

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

Question 5

Which of the following is NOT a characteristic of Neisseria?

Accepted Answer

A)   Some species are human pathogens.
B)   cocci
C)   gram-negative
D)   oxidase-positive
E)   requires X and V factorsF) A) and E)
G) C) and D)

Question 6

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

Accepted Answer

A)   Halococcus
B)   Sulfolobus
C)   Methanobacterium
D)   Staphylococcus
E)   HalobacteriumF) A) and C)
G) A) and B)

Question 7

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.F) A) and B)
G) A) and E)

Question 8

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

Accepted Answer

A) True 
 B)False

Question 9

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)   MycobacteriumF) B) and E)
G) C) and D)

Question 10

Streptomyces differs from Actinomyces because Streptomyces

Accepted Answer

A)   makes antibiotics.
B)   forms filaments.
C)   is a strict aerobe.
D)   is a bacterium.
E)   produces conidia.F) D) and E)
G) B) and E)

Question 11

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

Accepted Answer

A)   Pseudomonas
B)   Streptococcus
C)   Neisseria
D)   Staphylococcus
E)   SalmonellaF) B) and C)
G) A) and D)

Question 12

Photosynthetic organisms always produce oxygen gas as a metabolic byproduct.

Accepted Answer

A) True 
 B)False

Question 13

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.F) All of the above
G) B) and D)

Question 14

Which of the following is NOT a characteristic of spirochetes?

Accepted Answer

A)   found in the human oral cavity
B)   easily observed with brightfield microscopy
C)   possess an axial filament
D)   helical shape
E)   gram-negativeF) B) and E)
G) A) and B)

Question 15

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

Accepted Answer

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

Question 16

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

Accepted Answer

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

Question 17

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

Accepted Answer

A) True 
 B)False

Question 18

Both Beggiatoa and the purple sulfur bacteria use H2S. These bacteria differ in that Beggiatoa

Accepted Answer

A)   belongs to the gammaproteobacteria.
B)   uses H2S for a carbon source.
C)   uses H2S for an energy source.
D)   uses light energy.
E)   is a heterotroph.F) D) and E)
G) A) and B)

Question 19

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.F) All of the above
G) A) and B)

Question 20

The human body is typically free of archaeal species.

Accepted Answer

A) True 
 B)False

Exam 11: The Prokaryotes: Domains Bacteria and Archaea

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

Correct AnswerverifiedShow Answer

Which of the following is NOT a characteristic of spirochetes?

Correct AnswerverifiedShow Answer

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?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Both Beggiatoa and the purple sulfur bacteria use H2S. These bacteria differ in that Beggiatoa

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Streptomyces differs from Actinomyces because Streptomyces

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The human body is typically free of archaeal species.

Correct AnswerverifiedShow Answer

Photosynthetic organisms always produce oxygen gas as a metabolic byproduct.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following is NOT a characteristic of Neisseria?

Correct AnswerverifiedShow Answer

Which of the following bacteria is gram-negative?

Correct AnswerverifiedShow Answer

Burkholderia was reclassified from the gammaproteobacteria to the betaproteobacteria because

Correct AnswerverifiedShow Answer

The nonsulfur photosynthetic bacteria use organic compounds as

Correct AnswerverifiedShow Answer

The deinococci can be categorized as extremophiles.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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