Author
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Topic: Primordial Soup Cannot Tolerate Salt
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blitz77
Inactive Member
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Message 1 of 37 (18015)
09-23-2002 10:32 AM
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A recent article in the journal ) Astrobiology Vol 2. No. 2 (2002) shows that sea salt destroys fatty-acid membranes and prevents RNA from polymerizing, even at 1/7th the concentration of salt of today's oceans. They effectively dismember membranes and stop RNA units from forming anything longer than dimers. With mechanisms proposed to concentrate these for abiogenesis, it also appears that these mechanisms would also concentrate salt.
Replies to this message: | | Message 2 by nos482, posted 09-23-2002 10:34 AM | | blitz77 has replied |
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blitz77
Inactive Member
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Message 3 of 37 (18017)
09-23-2002 10:38 AM
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Reply to: Message 2 by nos482 09-23-2002 10:34 AM
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The point is is that the "primordial soup" theory relies on a mechanism to concentrate amino acids and other organic molecules. This would also concentrate salt, which would stop macromolecules forming. Also, many studies show that the early ocean was twice as salty as it is now-read this abstract of a book- Life on Land in the Precambrian and the Marine Vs Non-Marine Setting of Early Evolution And as for your point about anoxic vs oxic, I thought most people agree here that it was oxic- refer to exobiology@dukeuniversity
quote: However, most of the scientific community now believes that the early Earth's atmosphere was not reducing. Instead, scientists beleive the atmosphere was full of oxidants, such as CO2 and N2. An oxidizing atmosphere is essentially neutral, and does not permit organic chemistry to occur.
[This message has been edited by blitz77, 09-23-2002]
This message is a reply to: | | Message 2 by nos482, posted 09-23-2002 10:34 AM | | nos482 has replied |
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blitz77
Inactive Member
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Message 5 of 37 (18020)
09-23-2002 10:46 AM
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Reply to: Message 4 by nos482 09-23-2002 10:43 AM
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Because todays organisms are protected by cell membranes, skin, scales, etc.
This message is a reply to: | | Message 4 by nos482, posted 09-23-2002 10:43 AM | | nos482 has replied |
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blitz77
Inactive Member
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Message 7 of 37 (18023)
09-23-2002 10:56 AM
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Reply to: Message 6 by nos482 09-23-2002 10:49 AM
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This relates to abiogenesis, not evolution.
This message is a reply to: | | Message 6 by nos482, posted 09-23-2002 10:49 AM | | nos482 has replied |
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blitz77
Inactive Member
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Message 17 of 37 (18225)
09-25-2002 8:35 AM
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Reply to: Message 8 by Joe Meert 09-23-2002 11:10 AM
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I know there are other theories out there... however, the primordial soup theory is the main evolutionist model right now and taught in almost every school. Now, you are talking about numerous problems with my idea. What idea are you talking about? What I posted was just about how organic molecules cannot survive in salty water. Experimentally provable. So this is just further evidence that the primordial soup theory is wrong.
This message is a reply to: | | Message 8 by Joe Meert, posted 09-23-2002 11:10 AM | | Joe Meert has not replied |
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blitz77
Inactive Member
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Message 18 of 37 (18226)
09-25-2002 8:36 AM
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Reply to: Message 9 by nos482 09-23-2002 11:14 AM
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And since you don't know, your belief in the occurrence of abiogenesis is but faith that it occurred.
This message is a reply to: | | Message 9 by nos482, posted 09-23-2002 11:14 AM | | nos482 has replied |
Replies to this message: | | Message 22 by nos482, posted 09-25-2002 10:13 AM | | blitz77 has not replied |
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blitz77
Inactive Member
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How about this then?
quote: But when life first appeared around 3.5 billion years ago, the ocean was much saltier than it is today. Estimates of the early ocean's salinity range between 1.2 to 2 times present-day salinity.
-- Salt of the Early Earth
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blitz77
Inactive Member
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Message 24 of 37 (18247)
09-25-2002 10:21 AM
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Reply to: Message 23 by nos482 09-25-2002 10:14 AM
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quote: Evolution has nothing to do with how life got started.
Didn't I say that before?
quote: This relates to abiogenesis, not evolution.
[This message has been edited by blitz77, 09-25-2002]
This message is a reply to: | | Message 23 by nos482, posted 09-25-2002 10:14 AM | | nos482 has replied |
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