Biology / Unit 2 Bio 0347 short lesson, about 20 seconds
Osmosis
Captions available
The idea
Osmosis is the diffusion of water across a selectively permeable membrane, toward the side with lower water concentration relative to dissolved solute.
In practice
When a membrane blocks solute but separates two different solute concentrations, water crosses toward the side with more solute.
Where people slip
Osmosis moves water specifically; the solute driving that movement never crosses the membrane.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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