Szukana fraza: [Abstract = "The proposed model allows analysis of the influence of membrane permeability on the composition of internal material. It takes into account phenomena that lead to the elongation of an RNA strand \(ligation\), fission of molecules \(phosphodiester bond breakage\) and replication of polynucleotides. Results obtained from the model point out that the existence of protocells might support concentration of material and creation of longer molecules."]