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View Poll Results: Does it look plausible to you?

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Thread: Abiogenesis - request opinions on a progect (poll)

  1. #1 Abiogenesis - request opinions on a progect (poll) 
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    I'm proposing a relatively detailed experiment that hopes to bootstrap a protocell. This is science, the experiment works, or it doesn't(not done).

    1.What do you think
    2.Do you think you can arrange somehow to materialize the experiment, you can't just do it in your kitchen

    The theory:

    Primodial soup creates various molecules, from those, amphiphilic molecules spountaneously self assemble in to vesicles. This type of simple vesicules don't behave like modern cell membranes. The membrane is at a dynamic equilibrium with free floating molecules. If there is osmotic pressure inside, the membrane stretches, exposing the hydrophobic tail to water. Because its thermodynamicaly unfavorable, the dynamic equilibrium of membrane molecules is disturbed, a net flow of amphiphilic molecules passes from the water to the stretched membrane. Vesicles that are less stretched, by the inverse mechanism will lose membrane vesicles to the water. Net flow of molecules from less stretched vesicles to more stretched molecules. This is proven, comes from "The emergence of competition between model photocells." (Science 3 September 2004).

    If you are familiar with "clay theory" (Graham Cairns-Smith 1966), good, skip this paragraph, other wise keep reading. Clay crystals as they grow, they preserve there cross section, and crystalline defects. They are very fragile, and mechanical forces brakes them in pieces, each piece continuous to grow and to preserve its shape and defects. These shapes and defects confer special catalytic properties to the crystal, that "reproduces".Nice illustration

    http://books.google.com/books?id=79t...age&q=&f=false

    Small molecules(primordial soup) can get in and out of the vesicle. A reproducing crystal inside a vesicle, polymerizes at random those molecules, too big to get out they accumulate and increase the osmotic pressure inside the vesicule. Becauze of the above mecanism, vesicules with this type of crystalls, get biger. When too big, mecanical forces split the vesicule in smaller daughter vesicules, with there content being randomly distributed. And the cycle starts all over again.

    Because of the reproducing crystals, natural selection can start working and upgrade the protocel to a cell of modern complexity.

    ----------------------------------------------------------------------------------------------------------------

    other interesting details that i'll post in other comments or threads, otherwise it gets too big. Examples: the vesicles sometimes can spontaneously merge, origin of sex? How do we pass from crystalls do DNA? Organels? Exotic biochemistries protocells, liquid He protocells? Nice discussions on there own.

    Again, if some one thinks that he is capable to actually do the experiment it would be nice.


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  3. #2  
    Forum Cosmic Wizard spuriousmonkey's Avatar
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    I don't actually see an experiment.

    Describe the actual experiment and the null hypothesis.


    "Kill them all and let God sort them out."

    - Arnaud Amalric

    http://spuriousforums.com/index.php
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  4. #3  
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    Quote Originally Posted by spuriousmonkey
    I don't actually see an experiment.

    Describe the actual experiment and the null hypothesis.
    Ok maybe i didn't explain my self very well. I need opinions AND help. If you whant to do it your self its even beater for me.

    The first experiment should be very simplified, it only emulates part of the above theory. Prebiotic plausibility is ignored at this point. Totaly artificial stuff are ok, for now. You take some clay, that you know it polymerizes a certain compound. Kaolinite, or some kind of comercially available clay, to keep reproduction simple, but what compound? You build vesicles from some amphiphilic molecule. You pic a soap that forms vesicles, keep simple(and cheap). You keep it simple, only 3 substances. Hopefully, you can see what's going on under a simple microscope, and no need for a sterile environment. We can use alcoohole instaid of water, to keep the experiment bacteria free. Here we spill over in exotic "biochemistry".

    I supose, you have experience with experiments(echo ). Can you propose some kind of reaction that can potentially work? Or just a class of reactions. It would be best if its something you can buy at your local shop. Not stuff a 1000s of a gram.
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