Energy strategies range from hydrogen-eating methanogens to light-using haloarchaea with bacteriorhodopsin. The membrane is both battery and identity card. CRISPR systems were first understood in archaea and bacteria as memories of viruses. That is information ecology, not a home-engineering lesson. (5)
Methanogens use unusual cofactors that glow under UV — a field trick for spotting them in sludge. You meet archaea as methane in a wetland, as pink crusts on salt, and as quiet gut residents. They do not headline school hygiene charts.
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.
| Measure | Archaea | Bacteria | You want |
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| Medical weight | |||
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| Live debate |
Mark at least one measure to see a fit number.
Scores are the atlas’s 0–100 teaching marks for each topic. They are not a diagnosis, a dose or a treatment choice.
Tick a point once you could explain it in your own words. Ticks stay on this device.
0 of 4 points done
All points done. Next: Open the topic: Archaea
Energy strategies range from hydrogen-eating methanogens to light-using haloarchaea with bacteriorhodopsin. The membrane is both battery and identity card. CRISPR systems were first understood in archaea and bacteria as memories of viruses. That is information ecology, not a home-engineering lesson.
Methanogens use unusual cofactors that glow under UV — a field trick for spotting them in sludge. You meet archaea as methane in a wetland, as pink crusts on salt, and as quiet gut residents. They do not headline school hygiene charts.
Trying to 'kill archaea' in a bathroom is a category error. Target moisture and true pathogens; leave the domain that is not hunting you. A useful household fact: biogas and compost methane are archaeal chemistry you can smell, not a reason to fear your own gut.
Asgard archaea keep rearranging the eukaryote-origin story. Most marine archaea are still known mainly as DNA. The frontier is 'who is there and what do they eat?' more than 'how do we weaponise an archaeon' — a question this atlas refuses.
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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