Cell Transport FA
Learning Goal:
Predict movement of molecules through the cell membrane given
environmental or cell conditions and describe its affect on a cell.
Tutorials on cell transport
http://highered.mcgrawhill.com/sites/0072495855/student_view0/chapter2/animation__how_osmosis_works.ht
ml
http://highered.mcgrawhill.com/sites/9834092339/student_view0/chapter38/diffusion_through_cell_membranes.
html
http://highered.mcgrawhill.com/sites/0072495855/student_view0/chapter2/animation__how_facilitated_diffusion
_works.html
http://highered.mcgrawhill.com/sites/0072495855/student_view0/chapter2/animation__how_the_sodium_potas
sium_pump_works.html
http://highered.mcgrawhill.com/olcweb/cgi/pluginpop.cgi?it=swf::535::535::/sites/dl/free/0072437316/120068/bio0
2.swf::Endocytosis%20and%20Exocytosis
When the concentration of solute is lower in
the solution than inside the cell the solution is
100%
Aq
ua
Hy
po
to
n
to
ni
c
0%
ic
0%
c
0%
Iso
to
ni
D.
c
C.
on
i
B.
Hypertonic
Isotonic
Hypotonic
Aquatonic
Hy
pe
rt
A.
When the concentration of the solute is the
same on the outside of the cell as it is inside the
cell the solution is
10%
to
ni
c
0%
Aq
ua
Hy
pe
rt
on
i
c
c
0%
Iso
to
ni
D.
c
C.
90%
on
i
B.
Hypertonic
Isotonic
Hypertonic
Aquatonic
Hy
pe
rt
A.
43%
33%
24%
eq
ua
l
am
ou
nt
s
ou
to
m
ov
e
ft
he
in
..
ce
ll
ce
ll
C.
5%
90
solute
95%
H2O
th
e
B.
into the cell
out of the cell
equal amounts move
into and out of the
cell
90%
H2O
to
A.
10 %
solute
in
In which direction will the
net movement of water be in
the following example?
90%
H2O
20%
solute
80%
H2O
81%
19%
Aq
ua
c
on
i
Hy
pe
rt
Iso
to
ni
to
ni
c
0%
c
0%
ic
10 %
solute
Hy
po
to
n
What type of
solution is the
cell in?
A. Hypotonic
B. Isotonic
C. Hypertonic
D. Aquatonic
5%
to
ni
c
c
on
i
0%
Aq
ua
5%
Hy
pe
rt
D.
90%
c
C.
10%
solute
90%
H2O
Iso
to
ni
B.
Hypotonic
Isotonic
Hypertonic
Aquatonic
90%
H2O
ic
A.
10 %
solute
Hy
po
to
n
What type of solution is
the cell in?
What type of solution is the cell in?
81%
19%
to
ni
c
Aq
ua
ic
0%
Hy
po
to
n
c
0%
Iso
to
ni
D.
c
C.
10%
solute
90%
H2O
on
i
B.
Hypertonic
Isotonic
Hypotonic
Aquatonic
70%
H2O
Hy
pe
rt
A.
30 %
solute
In which direction will the net
movement of water be in the following
example?
30 %
57%
43%
in
..
ov
e
m
am
ou
nt
s
eq
ua
l
Ou
to
ft
he
ce
ll
0%
ce
ll
C.
10%
solute
90%
H2O
th
e
B.
Into the cell
Out of the cell
equal amounts move
into and out of the
cell
70% H2O
In
to
A.
solute
70% H2O
10%
solute
90%
H2O
71%
19%
5%
aq
ua
to
n
ic
c
to
ni
iso
hy
po
to
ni
c
5%
ni
c
30 %
solute
hy
pe
rto
The cytoplasm in
the cell is
A. hypertonic
B. hypotonic
C. isotonic
D. aquatonic
25%
solute
80%
free
water
20%
solute
100%
aq
ua
to
n
ic
c
0%
Iso
to
ni
ic
0%
Hy
po
to
n
c
0%
on
i
75%
free
water
Hy
pe
rt
What type solution is
the cell in?
A. Hypertonic
B. Hypotonic
C. Isotonic
D. aquatonic
What process explains movement of water into
hypertonic or out of hypotonic cells?
14% 14%
Net movement of water through
aquaporin channel protein
n
Fa
c
ili
ta
t
ed
tra
Di
ffu
sio
ns
po
rt
n
5%
Ac
t iv
e
D.
67%
Di
ffu
sio
C.
os
is
B.
Osmosis
Diffusion
Active transport
Facilitated
Diffusion
Os
m
A.
http://leavingbio.net/osmosis%20and%20diffusion.htm#osex
Red blood cells & other animal cells which don’t have a cell
wall burst if they are in what type of a solution? Small dots
are water molecules; larger dots are solute.
to
ni
c
0%
Aq
ua
ic
0%
Hy
po
to
n
0%
c
0%
Iso
to
ni
D.
c
C.
Cell shrinks due
To losing water
on
i
B.
Hypertonic
Isotonic
Hypotonic
Aquatonic
Cell swells &
takes on water
Hy
pe
rt
A.
No change
cell size
Why don’t plant cells burst after lots of
rain makes the soil hypotonic compared
to the cell cytoplasm?
0%
em
...
el
ls
tc
Pl
an
Pl
an
tc
el
ls
ha
v
ec
ha
v
el
l
ec
m
el
l
w
or
i..
.
qu
ap
ea
ha
v
0%
all
s
0%
el
ls
C.
tc
B.
Plant cells have
aquaporin channels
Plant cells have cell
walls
Plant cells have cell
membranes
Pl
an
A.
Why do plants die by plasmolysis (plasma
membrane breaking) near salted highways and
sidewalks?
0%
Th
ey
bu
r
re
le
as
e
st
b
y
so
ta
k
m
in
g
uc
h
in
w
a.
...
..
0%
ey
B.
They burst by taking
in too much water
from hypotonic soil
They release so
much water to the
hypertonic soil that
their membranes
shrink & break
Th
A.