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Author Topic:   Problems with the first life
crashfrog
Member (Idle past 1495 days)
Posts: 19762
From: Silver Spring, MD
Joined: 03-20-2003


Message 3 of 138 (124391)
07-14-2004 3:36 AM
Reply to: Message 1 by tubi417
07-14-2004 3:03 AM


Without an ozone layer this cell would receive heavy doses radiation from the sun- obviously this would kill it.
You answered this in the first part of your paragraph - the ocean protects it, if it's deep enough.
Somehow this cell also had a mutation that caused it to be able to reproduce asexually- if it didn't have this mutation- we wouldn't be here right now.
Since asexual reprodction would have to be the first thing it could do - replication being a prerequisite of being considered "alive" - it doesn't make sense to say this comes from a "mutation." Rather, asexual reproduction is an inherent quality of life. If it can't reproduce, it's not alive.
If we're talking about the first living thing, reproduction is already a given.
Lets say that chemicals in this primitive ocean make millions and millions of cells complete with all organelles- NOT from asexual reproduction but because of some kinda chemical reaction.
All life processes, including reproduction of any kind, are "some kind of chemical process" so this statement is more or less meaningless.
Given that there are plenty of living things today that lack all organelles why would you propose that the first living thing would have to have all organelles?

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crashfrog
Member (Idle past 1495 days)
Posts: 19762
From: Silver Spring, MD
Joined: 03-20-2003


Message 32 of 138 (125632)
07-19-2004 8:26 AM
Reply to: Message 29 by dandon83
07-19-2004 7:47 AM


what make a molecule rather than the others to be a membrane to protect the cell from outer conditions??!!!
In a word, hydrophilia. Lipid molecules have an end that is attracted to water and an end that is repulsed by it (because of the polar nature of water molecules.)
When they bind side-by-side, in two layers, they form the "lipid bi-layer" that is the precursor to all cellular membranes. There's no trick to making it happen; this is a natural, self-organizing arrangement that the lipid molecules form spontaneously.

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crashfrog
Member (Idle past 1495 days)
Posts: 19762
From: Silver Spring, MD
Joined: 03-20-2003


Message 132 of 138 (185936)
02-16-2005 4:23 PM
Reply to: Message 128 by mihkel4397
02-16-2005 3:50 PM


Re: there was no "first" life form
I can find no indication that Dawkins actually spoke or wrote these words.
But even if he did, why would he be wrong? We know intelligent design isn't parsimonious; there's only one known intelligent species in the universe, and we weren't around at the time. There's no avaliable intelligence at the time to do the designing. Therefore naturalist explanations continue to be the most parsimonious.
This message has been edited by crashfrog, 02-16-2005 16:25 AM

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 Message 128 by mihkel4397, posted 02-16-2005 3:50 PM mihkel4397 has not replied

  
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