Multiple Choice
Purple sulfur bacteria are
A) alphaproteobacteria that oxidize hydrogen sulfide in the presence of oxygen or nitrate.
B) gammaproteobacteria that use hydrogen sulfide as an electron donor for photosynthesis.
C) a phylogenetically heterogeneous group of microbes that reduce sulfate to sulfur.
D) thermophilic bacteria that reduce elemental sulfur to sulfide.
Correct Answer:
Verified
Correct Answer:
Verified
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