Anoxygenic Phototrophs

question 31

Multiple Choice

Anoxygenic phototrophs

• A) may use a variety of electron donors for photosynthesis.
• B) are an ancient monophyletic group of bacteria.
• C) can be either autotrophic or heterotrophic.
• D) can be either autotrophic or heterotrophic and may use a variety of electron donors for photosynthesis.

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