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Microbiology: Halobacterium and Haloferax Volcanii

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Microbiology: Halobacterium and Haloferax Volcanii

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Questions and Answers

What percentage of the global water is present as oceans?

96.1% (correct)

80.1%

90.1%

70.1%

Where can bacteria be found in aquatic systems?

Only in marine systems

Only in freshwater systems

Only in extreme environments

Suspended in the water, associated with decaying material, or coating the surface of rocks and sand grains (correct)

What is a characteristic of cyanobacteria?

They are only found in freshwater systems

They are unable to perform photosynthesis

They can only survive in extreme environments

They produce oxygen as a product of photosynthesis (correct)

Which of the following is an example of a marine ecosystem?

Hydrothermal vents (B) Signup and view all the answers

What is the main difference between the North Arm and the South Arm of the Great Salt Lake?

The South Arm has a lower salinity (C) Signup and view all the answers

Which type of bacteria is found in the North Arm of the Great Salt Lake?

Halobacterium and Halococcus (B) Signup and view all the answers

What is the role of cyanobacteria in the composition of the atmosphere?

They produce oxygen as a product of photosynthesis (C) Signup and view all the answers

What is a characteristic of bacteria in marine ecosystems?

They are present in virtually every environment (A) Signup and view all the answers

Which of the following is a habitat defined by physical, chemical, and biological variations in the sea?

Marine ecosystem (A) Signup and view all the answers

What is the name of the bacteria that are found in the Great Salt Lake and can survive in high-salinity environments?

Halobacterium and Halococcus (D) Signup and view all the answers