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Biology KEY
Osmosis and Diffusion
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Cards (16)
Osmosis
Diffusion
of
water
through a
selectively permeable membrane
Diffusion
Movement
of
molecules
from an area of
higher concentration
to an area of
lower concentration.
active transport
the
movement
of
materials
through a
cell membrane
using
energy
passive transport
the
movement
of
substances
across a
cell membrane
without the use of
energy
by the
cell
Solute
the
substance
that is
dissolved
Solvent
A
substance capable
of
dissolving
other
substances
Solution
A
mixture
that
forms
when one
substance dissolves
another.
Equilibrium
when the
concentration
of a
solute
is the
same throughout
a
solution
concentration gradient
A difference in the concentration of a substance across a distance.
permeable
Able
to be
passed
or
soaked
through
cell membrane
A cell
structure
that
controls
which substances can
enter
or
leave
the cell.
semi
permeable
some
substances
can
pass
across
them and
others
cannot
Kinetic
energy
energy
of
motion
independent
variable
variable
that
I
change
dependent
variable
the
variable
that is
measured
in an
experiment
control
In an experiment, the
standard
that is used for
comparison
