CONCENTRATION
PHOSPHOLIPIDS
TRANSPORT
DIFFUSION
MEMBRANE
PROTEINS
PASSIVE
OSMOSIS
ACTIVE
HIGH
LOW
T
R
A
N
S
P
O
R
T
U
T
L
A
Q
D
F
U
P
O
T
I
R
S
Q
L
A
K
Q
O
A
M
N
K
H
S
A
Z
G
L
U
W
L
T
C
B
X
E
O
I
O
M
O
K
H
W
O
R
T
R
D
Y
T
M
I
F
S
O
L
I
G
L
N
F
Q
R
A
Q
F
B
T
J
P
S
R
F
I
O
A
C
O
P
Z
N
A
R
A
Y
H
I
O
O
H
Q
M
O
O
Z
V
O
A
A
R
H
O
S
U
R
O
O
X
Q
E
U
V
I
L
N
T
K
L
W
A
E
R
G
A
L
V
R
S
S
E
E
N
Y
I
F
C
V
V
I
P
O
I
L
B
U
I
U
E
O
P
U
I
P
C
R
R
W
S
I
B
F
X
O
C
I
I
G
U
J
I
G
Y
B
S
G
W
F
A
Y
N
A
D
A
I
Q
S
Y
Q
N
A
D
T
I
S
J
O
X
S
O
A
L
I
I
P
B
P
Y
A
D
S
I
C
I
I
A
P
D
W
L
A
C
T
I
V
E
V
A
U
P
R
O
T
E
I
N
S
E
X
O
W
Y
D
A
K