Archaebacteria {methanogen}| can produce and use methane, live in oxygen-free environments, have unusual cell walls, have unusual lipids, and have different RNA nucleotides. They can be spheres or rods and are half of all Archaea.
Archaebacteria {methanobacterium} {methanococcus} can use methane.
Methanogens use hydrogen gas, carbon dioxide or acetate, phosphorus, and nitrogen. They make methane.
methane
With no oxygen, methane does not break down quickly. With no oxygen, ammonia breaks down by ultraviolet light. If methane concentration is higher than carbon dioxide, methane molecules polymerize.
carbon dioxide
With no oxygen, carbon dioxide and iron react to make iron-carbonate siderite. Early-Earth air carbon dioxide was less than eight times current concentration, because rocks do not have siderite.
Biological Sciences>Microbiology>Archaea>Euryarchaeota
4-Microbiology-Archaea-Euryarchaeota
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Date Modified: 2022.0224