26. Prokaryotes
Prokaryote Metabolism and Ecology
Multiple Choice
Multiple ChoiceThe Desulfovibrio bacterium breaks down organic matter (which it must have) and uses sulfate (not oxygen) as an electron acceptor. As a result, it produces hydrogen sulfide (H2S), accounting for the "rotten egg" smell of swamp muck. Oxygen is a deadly poison to Desulfovibrio. We would call Desulfovibrio a(n) __________.
A
facultative aerobic chemoheterotroph
B
facultative anaerobic chemoautotroph
C
obligate anaerobic chemoautotroph
D
There is insufficient information to answer this question.
E
obligate anaerobic chemoheterotroph
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