Results 291 to 300 of about 361,547 (333)
Some of the next articles are maybe not open access.
International Journal of Astrobiology, 2007
AbstractMechanisms of interstellar panspermia have recently been identified whereby life, wherever it has originated, will disperse throughout the habitable zone of the Galaxy within a few billion years. This re-opens the question of where life originated.
W.M. Napier +2 more
openaire +1 more source
AbstractMechanisms of interstellar panspermia have recently been identified whereby life, wherever it has originated, will disperse throughout the habitable zone of the Galaxy within a few billion years. This re-opens the question of where life originated.
W.M. Napier +2 more
openaire +1 more source
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.
openaire +2 more sources
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.
openaire +2 more sources
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.
openaire +2 more sources
Virus Origins and the Origin of Life
Prebiotic Chemistry and the Origin of Life, 2021D. Pan
semanticscholar +1 more source
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 ...
openaire +2 more sources
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.
openaire +2 more sources
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.
openaire +2 more sources
On the origin of life on earth
Aids ReviewsThe creation of the universe out of nothing (ex nihilo) is attributable to the eternal God. Would a direct divine intervention be needed for other singular events, such as the origin of life? Taking apart the human being, created to image and resemblance of God, we argue that current scientific knowledge allows us to rationally admit a continuity ...
Vicente, Soriano, Rubén, Herce
openaire +2 more sources
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 ...
openaire +2 more sources
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 ...
openaire +2 more sources