Antibiotics that disrupt or halt cell wall biosynthesis are actually ineffective at harming growth of mycoplasmas.
Some species in the genus Acidobacteria are classified in Bacteria while others are considered Archaea.
During stationary phase, group members of Serratia produce prodigiosins that contain pyrrole. Considering its structural relatedness to other pyrrole-containing molecules of known function (e.g., chlorophylls, bacteriochlorophylls, porphyrins), propose a potential ecological role for these compounds in soil where they are involved in something other than photosynthesis.
Proteobacteria members thrive in soils and occur at high concentrations as well. Other bacterial taxa are considered much less diverse in terms of their metabolic capabilities. Due to the role isolation has in discovering metabolic pathways, consider how obtaining hundreds of new isolates from a less studied phylum might change our views on metabolic diversity. Predict how the results of discovering another highly metabolically diverse group might be handled in terms of taxonomic assignment.