Why is NO3- a better electron acceptor for anaerobic respiration than is SO42-?
Answer to relevant QuestionsWhy is the enzyme hydrogenase useful to Desulfovibrio even when it is not grown on H2 as electron donor? How does a methanotroph differ from a methanogen? Which pathway for C1 assimilation found in methanotrophs is most energetically efficient and why? 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 ways that diazotrophs protect nitrogenase from O2? Compare and contrast the metabolism, morphology, and phylogeny of purple sulfur and purple nonsulfur bacteria.
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