Question 1

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 bacteriaF) None of the above
G) B) and C)

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.F) A) and B)
G) A) and C)

Question 3

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...

Question 4

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) C) and D)
G) A) and B)

Question 5

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.F) A) and D)
G) A) and C)

Question 6

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) C) and E)
G) None of the above

Question 7

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.F) B) and D)
G) B) and C)

Question 8

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 9

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  extremophilesF) C) and D)
G) A) and D)

Question 10

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 11

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

Accepted Answer

A)   Staphylococcus
B)   Rickettsia
C)   Wolbachia
D)   Coxiella
E)   EhrlichiaF) B) and C)
G) C) and E)

Question 12

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) A) and E)
G) A) and C)

Question 13

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

Accepted Answer

A) True 
 B)False

Question 14

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) C) and D)
G) B) and C)

Question 15

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) A) and C)
G) C) and D)

Question 16

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

Accepted Answer

A)   Escherichia
B)   Treponema
C)   Neisseria
D)   Staphylococcus
E)   BacteroidesF) A) and C)
G) B) and C)

Question 17

The human body is typically free of archaeal species.

Accepted Answer

A) True 
 B)False

Question 18

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.F) B) and C)
G) A) and D)

Question 19

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)   bacteroidetesF) A) and D)
G) D) and E)

Question 20

Which of the following bacteria is gram-negative?

Accepted Answer

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

Exam 11: The Prokaryotes: Domains Bacteria and Archaea

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

Correct AnswerverifiedShow Answer

Actinomycetes differ from fungi in that actinomycetes

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Borrelia is classified as a spirochete because it

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerAnswered by ExamLex AIWhile it is a widely accepted hypothesis...View AnswerShow Answer

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.

Correct AnswerAnswered by ExamLex AIYes, microbiologists still need to attem...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

Burkholderia was reclassified from the gammaproteobacteria to the betaproteobacteria because

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

Which of the following form conidiospores?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Salmonella, Shigella, Yersinia, and Serratia are all

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerAnswered by ExamLex AIBacteroides and Escherichia are indeed b...View AnswerShow Answer

Which of the following pairs is mismatched?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Rickettsias differ from chlamydias in that rickettsias

Correct AnswerverifiedShow Answer

Which of the following bacteria is gram-negative?

Correct AnswerverifiedShow Answer

The human body is typically free of archaeal species.

Correct AnswerverifiedShow Answer

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

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Correct Answer
Answered by ExamLex AI
While it is a widely accepted hypothesis...
View Answer

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Answered by ExamLex AI
Yes, microbiologists still need to attem...
View Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
Answered by ExamLex AI
Bacteroides and Escherichia are indeed b...
View Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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