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Many biomolecules, such as L-glutamic acid, are asymmetric, and occur in living systems in only one of the two possible forms, in the case of amino acids the left-handed form. Prebiotic chemistry would produce both forms, creating a puzzle for abiogenesis researchers. [280]
A scenario is a set of related concepts pertinent to the origin of life (abiogenesis), such as the iron-sulfur world. Many alternative abiogenesis scenarios have been proposed by scientists in a variety of fields from the 1950s onwards in an attempt to explain how the complex mechanisms of life could have come into existence. These include ...
Antonie van Leeuwenhoek. Traditional religion attributed the origin of life to deities who created the natural world. Spontaneous generation, the first naturalistic theory of abiogenesis, goes back to Aristotle and ancient Greek philosophy, and continued to have support in Western scholarship until the 19th century. [15]
Evolutionary art uses techniques and methods from artificial life to create new forms of art. Evolutionary music uses similar techniques, but applied to music instead of visual art. Abiogenesis and the origin of life sometimes employ alife methodologies as well. Quantum artificial life applies quantum algorithms to artificial life systems.
A proto-metabolism is a series of linked chemical reactions in a prebiotic environment that preceded and eventually turned into modern metabolism.Combining ongoing research in astrobiology and prebiotic chemistry, work in this area focuses on reconstructing the connections between potential metabolic processes that may have occurred in early Earth conditions. [1]
The prebiotic soup refers to the collection of every organic compound that appeared on Earth after it was formed. This soup would have most likely contained the compounds necessary to form early cells. [7] Phospholipids are composed of a hydrophilic head on one end and a hydrophobic tail on the other. They can come together to form a bilayer ...
In chapter "Stellar Graveyards, Nucleosynthesis, and Why We Exist" of The Stars of Heaven (2001) Clifford A. Pickover discusses various forms of abiological lifes. He poses the question whether in the times of ultimate expansion of the Universe with extremely low density of matter some structures could exist that can support the life of the ...
Panspermia comes in many forms, such as radiopanspermia, lithopanspermia, and directed panspermia. Regardless of its form, the theories generally propose that microbes able to survive in outer space (such as certain types of bacteria or plant spores [ 8 ] ) can become trapped in debris ejected into space after collisions between planets and ...