Archaea are prokaryotes that are not bacteria. Ether lipids, distinct ribosomes and methanogenesis mark a domain Carl Woese peeled off the old 'bacteria' bag in 1977. Famous species love heat, acid or salt, but the domain also fills oceans and the human gut. No archaeon is a known human pathogen.
This atlas treats archaea as a tree-of-life branch, not a synonym for 'extreme germ'. Methane, climate and eukaryote origins sit in later sections. For a century, anything small without a nucleus was a bacterium. Methane from mud and the pink of salt ponds were curiosities until molecules split the tree.
Mark each measure High, Any or Low for what you want. The fit number moves with every mark, and your marks follow you to the next page in this app.
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Scores are the atlas’s 0–100 teaching marks for each topic. They are not a diagnosis, a dose or a treatment choice.
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All points done. Next: Open the topic: Archaea
Archaea are prokaryotes that are not bacteria. Ether lipids, distinct ribosomes and methanogenesis mark a domain Carl Woese peeled off the old 'bacteria' bag in 1977. Famous species love heat, acid or salt, but the domain also fills oceans and the human gut. No archaeon is a known human pathogen.
This atlas treats archaea as a tree-of-life branch, not a synonym for 'extreme germ'. Methane, climate and eukaryote origins sit in later sections. For a century, anything small without a nucleus was a bacterium. Methane from mud and the pink of salt ponds were curiosities until molecules split the tree.
The 1977 rRNA paper did not instantly convince everyone. Lipid chemistry and later genomes made the domain unavoidable. Nineteenth-century chemists already knew marshes make methane. The microbes responsible were still unnamed archaea.
Carl Woese and George Fox publish 16S rRNA trees that peel archaea away from bacteria. Methanocaldococcus jannaschii is sequenced — a hydrothermal methanogen with a surprising gene mix.
This is education from the atlas. It does not diagnose and does not prescribe a dose. It does not replace the full topic page.
Next question: Bacteria · Open the topic: Archaea
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