Question 1

In the oceans, prokaryotes are outnumbered ten to one by________ .

Accepted Answer

The answer of In the oceans, prokaryotes are outnumbered ten...

Question 2

All stratified lakes contain a thermocline.

Accepted Answer

A) True 
 B)False

Question 3

A population of metabolically related microorganisms is called a(n)________.

Accepted Answer

The answer of A population of metabolically related microorganisms is...

Question 4

Archaea in pelagic deep- water are almost exclusively

Accepted Answer

A)   Euryarchaeota.
B)   Crenarchaeota.
C)   Nanoarchaeota.
D)   Thaumarchaeota.E) A) and C)
F) B) and C)

Question 5

To observe specific microorganisms in a soil particle, one can use

Accepted Answer

A)   fluorescent antibody staining.
B)   FISH.
C)   scanning electron microscopy.
D)   all of the above.E) A) and B)
F) All of the above

Question 6

A notorious biofilm former, implicated in cystic fibrosis, is

Accepted Answer

A)   Bacillus subtilis.
B)   Lactobacillus acidophilus.
C)   Pseudomonas aeruginosa.
D)   Escherichia coli.E) B) and C)
F) A) and B)

Question 7

Functional differences can be observed by using 16S rRNA gene phylogenetics of a microbial community.

Accepted Answer

A) True 
 B)False

Question 8

The physiochemical conditions of a microenvironment, by definition, remain static.

Accepted Answer

A) True 
 B)False

Question 9

Which statement is TRUE about the fluid from the hydrothermal vents?

Accepted Answer

A)   The fluid usually contains about equal amounts of organic and inorganic material.
B)   The fluid contains large amounts of oxidized inorganic materials.
C)   The fluid contains large amounts of organic material.
D)   The fluid contains large amounts of reduced inorganic materials.E) None of the above
F) C) and D)

Question 10

According to bacterial abundance studies done so far on soils, the ___________are generally not in high numbers when compared to other bacterial classes within the Proteobacteria phylum.

Accepted Answer

A)   Deltaproteobacteria
B)   Gammaproteobacteria
C)   Epsilonproteobacteria
D)   AlphaproteobacteriaE) B) and C)
F) None of the above

Question 11

In a stratified lake, the warmer and less dense layer is called the

Accepted Answer

A)   epilimnion.
B)   thermocline.
C)   hyperlimnion.
D)   hypolimnion.E) All of the above
F) A) and B)

Question 12

Water in the rocks and soils of Earth's subsurface is called _________.

Accepted Answer

The answer of Water in the rocks and soils of...

Question 13

Unlike other cyanobacteria, Prochlorococcus lacks phycobilins.

Accepted Answer

A) True 
 B)False

Question 14

Which bacterial genus is responsible for producing ferrous iron (Fe2+)  in groundwater?

Accepted Answer

A)   Alteromonas
B)   Geobacter
C)   Loktanella
D)   AquifexE) A) and B)
F) None of the above

Question 15

The cells within a biofilm can undergo intraspecies signaling, however interspecies signaling does not occur.

Accepted Answer

A) True 
 B)False

Question 16

What is an average concentration of prokaryotic cells along the surface of pelagic water?

Accepted Answer

A)   108 cells/ml
B)   104 cells/ml
C)   1010 cells/ml
D)   106 cells/mlE) A) and C)
F) B) and C)

Question 17

Low return of nutrients in the pelagic zone results in relatively low primary production in the open ocean when compared to freshwater lake systems.

Accepted Answer

A) True 
 B)False

Question 18

The emergence of new microbial species because of geographic isolation is called __________speciation.

Accepted Answer

A)   biogeological
B)   isolatory
C)   biogeochemical
D)   allopatricE) A) and D)
F) A) and B)

Question 19

Which aquatic habitat contains a pelagic zone?

Accepted Answer

A)   open ocean
B)   salt marsh
C)   estuary
D)   lakeE) B) and D)
F) None of the above

Question 20

Explain why biofilms are a concern in medicine.

Accepted Answer

Organisms on the surface of a biofilm ca...

Exam 23: Major Microbial Habitats and Diversity

The cells within a biofilm can undergo intraspecies signaling, however interspecies signaling does not occur.

Correct AnswerverifiedShow Answer

Low return of nutrients in the pelagic zone results in relatively low primary production in the open ocean when compared to freshwater lake systems.

Correct AnswerverifiedShow Answer

In a stratified lake, the warmer and less dense layer is called the

Correct AnswerverifiedShow Answer

Which statement is TRUE about the fluid from the hydrothermal vents?

Correct AnswerverifiedShow Answer

All stratified lakes contain a thermocline.

Correct AnswerverifiedShow Answer

Which bacterial genus is responsible for producing ferrous iron (Fe2+) in groundwater?

Correct AnswerverifiedShow Answer

Functional differences can be observed by using 16S rRNA gene phylogenetics of a microbial community.

Correct AnswerverifiedShow Answer

In the oceans, prokaryotes are outnumbered ten to one by________ .

Correct AnswerverifiedShow Answer

The physiochemical conditions of a microenvironment, by definition, remain static.

Correct AnswerverifiedShow Answer

A population of metabolically related microorganisms is called a(n)________.

Correct AnswerverifiedShow Answer

Water in the rocks and soils of Earth's subsurface is called _________.

Correct AnswerverifiedShow Answer

A notorious biofilm former, implicated in cystic fibrosis, is

Correct AnswerverifiedShow Answer

Archaea in pelagic deep- water are almost exclusively

Correct AnswerverifiedShow Answer

To observe specific microorganisms in a soil particle, one can use

Correct AnswerverifiedShow Answer

Which aquatic habitat contains a pelagic zone?

Correct AnswerverifiedShow Answer

What is an average concentration of prokaryotic cells along the surface of pelagic water?

Correct AnswerverifiedShow Answer

The emergence of new microbial species because of geographic isolation is called __________speciation.

Correct AnswerverifiedShow Answer

Unlike other cyanobacteria, Prochlorococcus lacks phycobilins.

Correct AnswerverifiedShow Answer

Explain why biofilms are a concern in medicine.

Correct AnswerverifiedOrganisms on the surface of a biofilm ca...View AnswerShow Answer

According to bacterial abundance studies done so far on soils, the ___________are generally not in high numbers when compared to other bacterial classes within the Proteobacteria phylum.

Correct AnswerverifiedShow Answer

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Which bacterial genus is responsible for producing ferrous iron (Fe²⁺) in groundwater?

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Organisms on the surface of a biofilm ca...
View Answer

Correct Answer
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