Bacteria Quiz 2

Many bacteria are of human concern because...

• ...many bacteria cause diseases.

• ...bacteria are rare and difficult to acquire.

• ...bacteria are important crops for farmers.

• ...bacteria improve the smell of indoor environments.

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MA.HS-LS4-4.

Bacteria

In which of the following environments can bacteria survive?

(select all that apply)

• 
• 
• 
• 

Tags

MA.HS-LS4-4.

Bacteria

An extremophile is an organism that...

• thrives in environments that are too extreme for humans

• can only survive in moderate climates
• requires high levels of oxygen to thrive
• is unable to adapt to changing environments

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Bacteria

The Grand Prismatic Spring in Yellowstone National Park in the United States is a hot spring with temperatures as high as 160°F (70°C). However, many bacteria live in the hot spring!  The bacterium Synechococcus actually needs to be in temperatures of 160°F to survive—anywhere else is too cold for the bacteria!

How is Synechococcus an example of an extremophile?

• Some parts of the world are too cold for Synechococcus to survive.

• Synechococcus live in water.

• Synechococcus are bacteria.

• Synechococcus lives in extremely hot environments.

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Bacteria

Which of the following is an adaptation that allows extremophiles to live in extremely cold places?

• Production of antifreeze

• Rapid DNA repair

• Production of "heat shock" proteins

• Pumping hydrogen out of cells

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Bacteria

Which of the following is an adaptation that allows extremophiles to live in incredibly dry places?

• Ability to photosynthesize in low light
• Rapid DNA repair

• Production of "heat shock" proteins

• Going dormant until rain comes

Tags

Bacteria