Which Gammaproteobacteria Genera Include Species That Oxidize H₂S to S⁰

Question

Which gammaproteobacteria genera include species that oxidize H₂S to S⁰?
A) Escherichia and Enterobacter
B) Chromatium and Beggiatoa
C) Klebsiella and Shigella
D) Proteus and Erwinia
E) Rhodobacter and Nitrosomonas

Accepted Answer

Chromatium and Beggiatoa are both genera of gammaproteobacteria that include species capable of oxidizing H₂S to S⁰. This process is known as sulfur oxidation and is an important aspect of many sulfur-reducing bacteria. Other options listed either do not include genera that can perform this process (A, C, D, E) or are not related to H₂S oxidation (E).