Diazotrophs are obligately symbiotic bacteria that fix N₂ into ammonia, thus providing a critical source of nitrogen to their host.
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Q47: Iron-reducing bacteria are obligately aerobic organisms that
Q48: Bioluminescence develops when
A) population density is high.
B)
Q49: Although Cyanobacteria contribute more than 35% of
Q50: Nitrogenase is an oxygen-sensitive enzyme even though
Q51: Bioluminescence is catalyzed by luciferase, which creates
Q53: The ecological diversity of microbes is largely
Q54: Anoxygenic phototrophs may or may not be
Q55: Akinetes and hormogonia are specialized cells, found
Q56: Diazotrophs are found in all three domains
Q57: Sulfide oxidizers are among the most ecologically
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