Purple Phototrophic Bacteria Flashcards

1
Q

Give 4 examples of purple phototrophic bacteria.

A

Chromatium, ectothiorhodospira, rhodobacter, rhodospirillum

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2
Q

What kind of photosynthesis do purple phototrophic bacteria have?

A

Anoxygenic photosynthesis

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3
Q

What do purple phototrophic bacteria contain that is somewhat unique to them?

A

Bacteriochlorophylls and carotenoid pigments

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4
Q

Describe the photosynthetic system of purple phototrophic bacteria.

A

They have intracytoplasmic photosynthetic membrane systems.

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5
Q

What do purple sulfur bacteria do with H2S?

A

They use H2S as an electron donor for CO2 reduction, which is oxidized to S0

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6
Q

What are purple nonsulfur bacteria?

A

Its a group of purple phototrophic bacteria that were once thought not to use H2S as a donor.

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7
Q

What do purple nonsulfur bacteria use as an electron donor?

A

Hydrogen, although some may use other compounds in small amounts

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