Epsilonproteobacteria are Most Dominant in Hydrothermal Vents Because They

Question

Epsilonproteobacteria are most dominant in hydrothermal vents because they
A) reduce nitrogen.
B) oxidize sulfide and sulfur as electron donors.
C) use oxygen as electron acceptors.
D) bind divalent cations.

Accepted Answer

Epsilonproteobacteria are able to oxidize sulfide and sulfur as electron donors, which is a common characteristic of hydrothermal vents where sulfur and sulfide are abundant. This ability allows them to be dominant in these extreme environments.