semi- permeable
impermeable
A membrane that only allows certain
materials to pass through.
A membrane that does not allow any
materials to pass through.
permeable
diffusion
A membrane that allows all materials to
pass through.
The movement of particles from an area of
high concentration to low concentration.
osmosis
active transport
The movement of water across a semipermeable membrane, from a dilute
solution to a more concentrated solution.
The movement of particles from an area of
low concentration to high concentration,
with the help of carrier proteins and
energy input.