Re: OT wondering:)


r norman wrote:
On 23 May 2006 18:59:39 -0700, "Stephen Montgomery-Smith"
<stephen@xxxxxxxxxxxxxxxxx> wrote:


<snip>

The main problem is freezing. Cell processes stop when cell water
freezes and the formation of ice crystals usually kills the cells
unless special antifreeze measures are adopted. Hence the problem
with terrestrial life in the cold. Both aquatic and terrestrial
animals face the same protein denaturing problems at high temperatures
but aquatic animals are not ordinarily subjected to as high
temperatures as terrestrial ones and so have not developed proteins
capable of tolerating even the normal body temperature of birds and
mammals.

15 species of arctic icefish have anitfreeze in their blood.

http://www.nsf.gov/pubs/1996/nstc96rp/sb3.htm

http://www.sciencedaily.com/releases/1998/10/981028160238.htm

They lack hemoglobin, and are very efficient at moving their blood thru
their bodies; they survive on the O2 dissolved in their blood.

Kermit

.

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