Results 261 to 270 of about 1,434,799 (290)
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Bioceramics and the origin of life
Journal of Biomedical Materials Research, 1989AbstractCreation of life involves establishing an organism that is capable of self‐maintenance, self‐reproduction, and adjustment to a changing environment. A Bioactive Substrate Theory of the origin of life is proposed, where the function of the bioactive substrates was to achieve the irreversible ordering of macromolecules into replicative structures.
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Acta Biotheoretica, 1961
As to the primary morphogenesis which occurred after the origin of life, two conditions are considered. The above conditions are satisfied by the morphogenetic polarity.
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As to the primary morphogenesis which occurred after the origin of life, two conditions are considered. The above conditions are satisfied by the morphogenetic polarity.
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A theory of the origin of life
Origins of Life, 1981Life on Earth is essentially nucleic acids (NAs) influencing peptide synthesis such that NA replication is favored. It is proposed that the ability to synthesize polypeptides evolved gradually - one peptide bond at a time. The proposed evolution of the peptide synthesis apparatus begins with a 'transfer NA' (tNA) which catalyzes the transfer of ...
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Scientific American, 2007
Extraordinary discoveries inspire extraordinary claims. Thus James Watson reported that, immediately after they had uncovered the structure of DNA, Francis Crick "winged into the Eagle (pub) to tell everyone within hearing that we had discovered the secret of life." Their structure--an elegant double helix--almost merited such enthusiasm.
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Extraordinary discoveries inspire extraordinary claims. Thus James Watson reported that, immediately after they had uncovered the structure of DNA, Francis Crick "winged into the Eagle (pub) to tell everyone within hearing that we had discovered the secret of life." Their structure--an elegant double helix--almost merited such enthusiasm.
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Origins of life and evolution of the biosphere, 1988
On the assumption of a uniform sample space probability hypothesis it is estimated a maximum number of polypeptides (or other kind of polymers) that could be synthesized in the prebiotic Earth. Besides, on the basis of five premises that are postulated as indispensable requirements for the origin of a living system, under the constraints of a protein ...
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On the assumption of a uniform sample space probability hypothesis it is estimated a maximum number of polypeptides (or other kind of polymers) that could be synthesized in the prebiotic Earth. Besides, on the basis of five premises that are postulated as indispensable requirements for the origin of a living system, under the constraints of a protein ...
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Symbiosis and the origin of life
Origins of Life, 1977The paper uses chemical kinetic arguments and illustrations by computer modelling to discuss the origin and evolution of life. Complex self-reproducing chemical systems cannot arise spontaneously, whereas simple auto-catalytic systems can, especially in an irradiated aqueous medium.
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Prebiotic chemistry and origins of life research with atomistic computer simulations
Physics of Life Reviews, 2020Andrea Pérez-Villa +2 more
exaly