Biological complexity: more cell pore complexity (Introduction)

by David Turell , Wednesday, May 04, 2016, 16:23 (3125 days ago) @ dhw


> dhw: First of all, you know as well as I do that although bacteria do not have a nucleus, there are single-celled eukaryotes that do.-You are correct. I had forgotten about them. But that makes the point I'm trying to present in this series on pores in membranes. How did single cells create such a complex mechanisms as pores in a nuclear membrane? We don't know but the complexity begs for advanced planning. Those pores allow two direction traffic controls keeping required levels of concentration of molecules in tight ranges. That is just how a cell lives and works.-> dhw:(Sorry, but once again I can't establish the link.)-Here it is and it begs my question:-http://evolution.berkeley.edu/evolibrary/article/_0/endosymbiosis_03->> 
> This was Lynn Margulis's theory, and Lynn Margulis was a champion of cellular intelligence. You may not believe the theory (which would appear to involve an initial degree of chance followed by intelligent cooperation), but you can argue about it with the ghost of Margulis or with all the other specialists who agree with her. -How does it beg? It dos not explain the formation of the nucleus, only why there are mitochondria, which also have membranes, pre-formed when swallowed. I grant that single cells have their outer membrane, but that membrane allows in food sources and spits out waste, but the nucleus membrane is much more complex with all the processes of life being managed.
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> dhw: Finally, the hypothesis over which we disagree concerns how evolution works, not how the mechanism for evolution came into existence. Once more, I cannot see how the long acknowledged complexity of the cell provides any more support for your divine preprogramming or direct guidance of all innovations, lifestyles and natural wonders than it does for the possibly divine design of an autonomous, inventively intelligent mechanism to produce the same innovations etc. The hypothesis remains afloat.-I feel the complexity demands guidance. the cell nuclear pore is just one of hundreds of examples, perhaps thousands.