Prebiotic Chemistry on the Primitive Earth
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منابع مشابه
Atmospheric Prebiotic Chemistry and Organic Hazes
Earth's atmospheric composition at the time of the origin of life is not known, but it has often been suggested that chemical transformation of reactive species in the atmosphere was a significant source of prebiotic organic molecules. Experimental and theoretical studies over the past half century have shown that atmospheric synthesis can yield molecules such as amino acids and nucleobases, bu...
متن کاملMetabolism and motility in prebiotic structures.
Easily accessible, primitive chemical structures produced by self-assembly of hydrophobic substances into oil droplets may result in self-moving agents able to sense their environment and move to avoid equilibrium. These structures would constitute very primitive examples of life on the Earth, even more primitive than simple bilayer vesicle structures. A few examples of simple chemical systems ...
متن کاملThe Composition and Organization of Cytoplasm in Prebiotic Cells
This article discusses the hypothesized composition and organization of cytoplasm in prebiotic cells from a theoretical perspective and also based upon what is currently known about bacterial cytoplasm. It is unknown if the first prebiotic, microscopic scale, cytoplasm was initially contained within a primitive, continuous, semipermeable membrane, or was an uncontained gel substance, that later...
متن کاملOrgel LE (2008) The Implausibility ofMetabolic Cycles on the Prebiotic Earth. PLoSBiol 6:e18 Pascal R, Boiteau L, Commeyras A (2005) From the Prebiotic Synthesis of α-Amino Acids Towards a Primitive Translation Apparatus for the Synthesis of Peptides. Top Curr
Pascal R, Boiteau L, Commeyras A (2005) From the Prebiotic Synthesis of α-Amino Acids Towards a Primitive Translation Apparatus for the Synthesis of Peptides. Top Curr Chem 259:69–122 Pross A (2004) Causation and the origin of life. Metabolism or replication first? Orig Life Evol Biosph 34:307–321 Schoonen MAA, Xu Y, Bebie J (1999) Energetics and kinetics of the prebiotic synthesis of simple or...
متن کاملPREBIOTIC CHEMISTRY Borate Minerals and Origin of the RNAWorld
The RNA World is generally thought to have been an important link between purely prebiotic (>3.7 Ga) chemistry and modern DNA/protein biochemistry. One concern about the RNAWorld hypothesis is the geochemical stability of ribose, the sugar moiety of RNA. Prebiotic stabilization of ribose by solutions associated with borate minerals, notably colemanite, ulexite, and kernite, has been proposed as...
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تاریخ انتشار 2006