Skip to content Skip to a section
Tool·Lifes /Everything About Microbes Search apps and topics…
Apps
Explore Guides

TTree of microbes

Bacteria, viruses, fungi, archaea, phages and protozoa — the main branches of microbial life. Bacteria · Viruses · Fungi · Archaea · Bacteriophages · Protozoa.

At a glance
Explore

Start here

Short paths into the atlas — pick one and follow the seven sections.

🫀Gut microbiomeA diverse intestinal community fed by fibre — not a single ideal species list and not a wellness shop.

Popular in Everything About Microbes

BacteriaSingle-celled prokaryotes with cell walls — the oldest widespread life form, and both partners and pathogens.VirusesPackets of DNA or RNA that are not cells — they replicate only inside living hosts.FungiA eukaryotic kingdom of yeasts, moulds and mushrooms — chitin walls, external digestion, partners of plants.ArchaeaA prokaryotic domain that is not bacteria — methanogens, extremophiles and no known human pathogens.BacteriophagesViruses that infect bacteria — Earth's most abundant biological entities, and a concept-level idea in medicine.ProtozoaMotile unicellular eukaryotes — a teaching grade that includes pond ciliates and a minority of serious parasites.

Best-of microbe rankings

Microbes FAQ

Is this advice?
Public-health education — not a care plan, prescription, or outbreak briefing.
Where to start?
Identity → How they live → Body & health
Local lens?
public-health desks and lab teaching frames
What are scores?
Editorial 0–100 browsing aid within this atlas.

Ranked by familiarity

Within this family, which topics people recognise most often.

Viruses 96 Bacteria 95 Fungi 80 Protozoa 58 Bacteriophages 42 Archaea 35

Browse every topic

Bacteria

Single-celled prokaryotes with cell walls — the oldest widespread life form, and both partners and pathogens.

Familiarity 95

Viruses

Packets of DNA or RNA that are not cells — they replicate only inside living hosts.

Familiarity 96

Fungi

A eukaryotic kingdom of yeasts, moulds and mushrooms — chitin walls, external digestion, partners of plants.

Familiarity 80

Archaea

A prokaryotic domain that is not bacteria — methanogens, extremophiles and no known human pathogens.

Familiarity 35

Bacteriophages

Viruses that infect bacteria — Earth's most abundant biological entities, and a concept-level idea in medicine.

Familiarity 42

Protozoa

Motile unicellular eukaryotes — a teaching grade that includes pond ciliates and a minority of serious parasites.

Familiarity 58

Other families

Beneficial allies

→

Change & defence

→

Encounters

→

See size scale →