Biology / Unit 9 Bio 1973 short lesson, about 20 seconds
"Germs Are All Bad"
Captions available
The idea
Treating every prokaryote as a harmful "germ" overstates the case— only a small fraction of prokaryotic species are pathogens, and most are harmless or beneficial.
In practice
The vast majority of gut, soil, and skin prokaryotes cause no disease, while several benefit digestion, immunity, or nutrient cycling.
Where people slip
This entry states the overgeneralized misconception— Bio 1975 restates the beneficial-prokaryote mechanisms it overlooks.
Your place on the trail
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Builds on
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