How do denitrifying and sulfate-reducing bacteria degrade hydrocarbons anaerobically and without oxygenases?
Answer to relevant QuestionsWhat accessory pigments are present in phototrophs, and what are their functions? Compare and contrast the utilization of H2S by a purple phototrophic bacterium and by a colorless sulfur bacterium such as Beggiatoa. What role does H2S play in the metabolism of each organism? What are some ecological strategies that aerobic sulfide-oxidizers use to compete with the chemical oxidation of H2S by atmospheric O2? Contrast the life cycle of Hyphomicrobium with that of Caulobacter. Describe a key physiological feature of the following Bacteria that would differentiate each from the others: Lactobacillus, Nitrospira, and Geothrix.
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