Biology Reference
In-Depth Information
FIGURE 14.8
Rod MacKinnon (1956
e
)
[62]
.
FIGURE 14.9
Tetrodotoxin.
most potent natural toxins (
Figure 14.10
) and it has been estimated that a single contaminated
mussel has enough STX to kill 50 humans! STX's toxicity has not escaped the keen eye of the
United States military, which has weaponized the toxin and given it the designation TZ.
Solute Equilibrium
The driving force for trans-membrane solute movement by simple or passive diffusion is
determined by the free energy change
D
G.
s
o
0
=½
D
G
¼
RT In
½
s
o
þ
ZF
DJ
