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Welcome to Biology.SE! Your question has nothing to do with evolutionary biology Evolutionary Theory does not explain the origin of life just like the Theory of Gravity does not explain the diffraction of light! In other words, explaining the origin of life is not within the scope of evolutionary biology. You should edit your title. But still, your ...


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For this specific question, let's divide the cells into two categories: Cells that rarely "navigate" are the cells that are connected to give the tissue its mechanical properties. How do these avoid an "adverse stimulus"? Well, they don't avoid it. But if that stimulus "harms" cells they react in some way: if the cell is destructed by the pathogen, it ...


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RNAeasy kit will not usually give phenolic contamination. Your poor 260/230 is perhaps because of low yield; check the absolute absorbance values. Low 260/230 (and low yield) also happens because of improper lysis. I would advise that you do the cell lysis using more effective methods. I would not advise another phenol-chloroform or alcohol precipitation ...


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Well, The paper published in Nature 2003: Despite two decades of progress in understanding the role of LGs and their contents in epidermal barrier function, almost nothing is known about the mechanisms responsible for the assembly of these unique organelles.source: http://www.nature.com/jid/journal/v120/n4/full/5601763a.html Since then the word ...


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There are some inhibitors in the cell, which have specific effects on signal transduction. These are mostly second messengers (like cAMP, cGMP, calcium ions, inositol 1,4,5-trisphosphate and others), which are then able to diffuse relative fast to other proteins. There they can either amplify a signal or cause inhibiting processes to start which then ...


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More like a comment: It doesn't seem that such a database exists, but I think it's relatively easy to create a list of multicellular taxa and the rest should be considered unicellular. Since you use ncbi taxonomy, you can easily get higher-level parent for any species, so there is no need to define cellularity for individual species. The challenging groups ...



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