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Biology
Cell biology
Diffusion and osmosis
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Created by
Melissa Geritas
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Cards (7)
Diffusion
The movement of
particles
from an area of
high
concentration to an area if
low
concentration
It
doesn't
happen in
solids
but
Does
happen in
liquids
and
gases
The
bigger
the
concentration
gradient or
higher
the
temp
Faster
the diffusion rate
Dissolved
substances can
Move
in
and
out
of a cell by diffusion
Since the cell membrane is only
partially
permeable
Only
small
molecules
can pass through
Alveoli
and
villi
have fast diffusion
Large
surface area
,
thin
walls
and
good
blood
supply
Osmosis
Passive
movement of water particles across a
partially
permeable
membrane from
high
to
low
concentration of
water
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