Describe the coacervate theory of Oparin.
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Answer:
coacervate theory. a theory expressed by the Russian biochemist A.I. Oparin in 1936 suggesting that the origin of life was preceded by the formation of mixed colloidal units called 'coacervates'. ... Oparin proposed that whilst these molecules were not living, they behaved like biological systems in the ancient seas.
Answer:
Coacervates (/koʊəˈsɜːrvəts/ or /koʊˈæsərveɪts/) are organic-rich droplets formed via liquid-liquid phase separation, mainly resulting from association of oppositely charged molecules (macro-ions, polyelectrolytes, polysaccharides, proteins, etc.) or from hydrophobic proteins (such as elastin-like polypeptides). Coacervation is a phenomenon that produces coacervate colloidal droplets. When coacervation happens, two liquid phases will co-exist: a dense, polymer-rich phase (coacervate phase or coacervate droplets) and a very dilute, polymer-deficient phase (dilute phase). Coacervate droplets can measure from 1 to 100 micrometres across, while their soluble precursors are typically on the order of less than 200 nm. The name "coacervate" derives from the Latin coacervare, meaning "to assemble together or cluster".
The process of coacervation was famously proposed by Alexander Oparin and J. B. S. Haldane as crucial in his early theory of abiogenesis (origin of life/proiskhozhdenie zhizni). This theory proposes that metabolism predated information replication, although the discussion as to whether metabolism or molecules capable of template replication came first in the origins of life remains open and for decades the theory of Oparin and Haldane was the leading approach to the origin of life question.
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