Into and Out of the Cell WS Key
Each of the boxes below represents a different method cells use to bring small particle into
the cell or to take small particles out of the cell. Add the notes at the bottom of the pate to
the appropriate box. Be careful—some notes can be used more than once.
Osmosis
-Particles move through
cell membrane between
phospholipid molecules
-Particles move from an
area of high concentration
to an area of low
concentration
**Water
Passive Transport
Active Transport
-Particles move through
protein doorways
-Particles move through
protein doorways
-Particles move from an area
of high concentration to an
area of low concentration
-Particles move from an
area of low concentration to
an area of high
concentration
-Sugar or amino acids
-Does not require ATP
(energy)
**Requires ATP
# 1, 3, 5, and 6
#1, 4, and 7
-Does not require ATP
#2, 5, 6, and 8
Notes:
1.
2.
3.
4.
5.
6.
7.
8.
Particles move through protein doorways
Particles move through cell membrane between phospholipid molecules
Sugar or amino acids
Requires ATP
Particles move from an area of high concentration to an area of low concentration
Does not require ATP
Particles move from an area of low concentration to an area of high concentration
Water
On the back of this page DEFINE:
-Diffusion—movement of particles where their concentration is high to an area where there
concentration is low
-Osmosis—the diffusion of water across a cell membrane
-Passive Transport --the diffusion of particles through proteins in the cell membrane from
areas where the concentration of particles is high to areas where the concentration
of particles is low
-Active Transport--the movement of particles through proteins in the cell membrane
against the direction of diffusion. Requires cells to use energy, ATP
-Diffusion—movement of particles where their concentration is high to an area where there
concentration is low
-Osmosis—the diffusion of water across a cell membrane
-Particles move through cell membrane between phospholipid molecules
-Particles move from an area of high concentration to an area of low concentration
**Water
-Does not require ATP
-Passive Transport --the diffusion of particles through proteins in the cell membrane from
areas where the concentration of particles is high to areas where the concentration
of particles is low
-Particles move through protein doorways
-Particles move from an area of high concentration to an area of low concentration
-Sugar or amino acids
-Does not require ATP (energy)
-Active Transport--the movement of particles through proteins in the cell membrane
against the direction of diffusion. Requires cells to use energy, ATP
-Particles move through protein doorways
-Particles move from an area of low concentration to an area of high concentration
**Requires ATP