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Author Topic:   What is life?
alaninnont
Member (Idle past 4926 days)
Posts: 107
Joined: 02-27-2009


Message 1 of 4 (503366)
03-18-2009 9:56 AM


I was following a post on the origins of life and began thinking about that age-old question, what is life? Koshland gave us the "P(rogram), I(mprovisation), C(ompartmentalization), E(nergy), R(egeneration), A(daptability), S(eclusion)" definition. Has anyone developed a simpler one? Discussions on the topic would be easier if we had an accurate, simpler definition.

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 Message 2 by AdminNosy, posted 03-18-2009 10:21 AM alaninnont has replied

AdminNosy
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Posts: 4754
From: Vancouver, BC, Canada
Joined: 11-11-2003


Message 2 of 4 (503368)
03-18-2009 10:21 AM
Reply to: Message 1 by alaninnont
03-18-2009 9:56 AM


some expansion please
It would be helpful if you expanded on the meaning of each of P.I.C.E.R.A.S.
Is this to go in "origin of life" or where?

This message is a reply to:
 Message 1 by alaninnont, posted 03-18-2009 9:56 AM alaninnont has replied

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 Message 3 by alaninnont, posted 03-18-2009 3:05 PM AdminNosy has not replied

alaninnont
Member (Idle past 4926 days)
Posts: 107
Joined: 02-27-2009


Message 3 of 4 (503396)
03-18-2009 3:05 PM
Reply to: Message 2 by AdminNosy
03-18-2009 10:21 AM


Re: some expansion please
He called them the seven pillars of life. Here is basically what they are;
1. Program - Life has some kind of organized plan to operate through such as the nucleic acid and amino acid system.
2. Improvization - A living thing can change its plan in response to its environment.
3. Compartmentalization - A living thing must have separated spaces for necessary reactions to prevent other ingredients from messing up the reactions.
4. Energy - Living things require energy.
5. Regeneration - Living things must have a system to repair or restore damaged or lost components or processes.
6. Adaptability - A living thing responses to changes, dangers, and needs.
7. Seclusion - Chemical pathways must be separated.
Yes, I think Origin of Life would be an appropriate category.

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 Message 2 by AdminNosy, posted 03-18-2009 10:21 AM AdminNosy has not replied

AdminNosy
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Posts: 4754
From: Vancouver, BC, Canada
Joined: 11-11-2003


Message 4 of 4 (503402)
03-18-2009 4:02 PM


Thread copied to the What is life? thread in the Origin of Life forum, this copy of the thread has been closed.

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