Results 1 to 10 of about 2,479 (207)

Dissipative Photochemical Abiogenesis of the Purines [PDF]

Entropy, 2022
We have proposed that the abiogenesis of life around the beginning of the Archean may have been an example of “spontaneous” microscopic dissipative structuring of UV-C pigments under the prevailing surface ultraviolet solar spectrum. The thermodynamic function of these Archean pigments (the “fundamental molecules of life”), as for the visible pigments ...
Claudeth Hernández, Karo Michaelian
doaj   +6 more sources

The requirement of cellularity for abiogenesis [PDF]

Computational and Structural Biotechnology Journal, 2021
The history of modern biochemistry started with the cellular theory of life. By putting aside the holistic protoplasmic theory, scientists of the XX century were able to advance the functional classification of cellular components significantly. The cell became the unit of the living.
Adriano Caliari, Jian Xu, Tetsuya Yomo
doaj   +6 more sources

Undefining life's biochemistry: implications for abiogenesis [PDF]

Journal of The Royal Society Interface, 2022
In the mid-twentieth century, multiple Nobel Prizes rewarded discoveries of a seemingly universal set of molecules and interactions that collectively defined the chemical basis for life. Twenty-first-century science knows that every detail of this Central Dogma of Molecular Biology can vary through either biological evolution, human engineering ...
Stephen J. Freeland
europepmc   +4 more sources

The Chemical Origin of Behavior is Rooted in Abiogenesis [PDF]

Life, 2012
We describe the initial realization of behavior in the biosphere, which we term behavioral chemistry. If molecules are complex enough to attain a stochastic element to their structural conformation in such as a way as to radically affect their function ...
Brian Larson, Ric Jensen, Niles Lehman
core   +6 more sources

Additional Remarks on Abiogenesis [PDF]

Nature, 1873
SINCE my communication in NATURE, March 20, a further investigation of the subject has shown me that the experiments there recorded do not yet fully prove the reality of abiogenesis. My argumentation based on those experiments is liable to the following objection:—
David Huizinga
openalex   +3 more sources

New Experiments on Abiogenesis [PDF]

Nature, 1873
HAVING occupied myself for some time past with an experimental study of abiogenesis, I have followed with much interest the controversies on that question in recent numbers of NATURE, and beg leave therefore to state to the readers of this journal the results of my experiments, which form in my opinion a not unimportant contribution to the solution of ...
David Huizinga
openalex   +3 more sources

Panspermia versus Abiogenesis: A Clash of Cultures

Journal of Scientific Exploration, 2022
We are too often led to believe that strident denunciations of an unorthodox position in science are always based upon rational argument and irrefutable fact.  This is clearly not so in many instances, one of which relates to panspermia and the dispersal of life throughout the universe. We are led to believe that from the beginning of the enlightenment
Chandra Wickramasinghe
openalex   +3 more sources

Abiogenesis in Upper Secondary Biology Curricula [PDF]

Evolution: Education and Outreach, 2010
Biological evolution and abiogenesis are distinct branches of science, although they are closely related in the context of a holistic evolutionary conceptual framework. The relationship between evolution and abiogenesis furnishes profound insights into the nature of science, a much emphasised aspect of modern science education.
Barend Vlaardingerbroek
openalex   +2 more sources

On the Transitional Character and Regularity of Planetary Abiogenesis [PDF]

BioSystems
The emergence of biology from planetary chemistry remains one of the central open questions in science. In this study, we address the core challenge of distinguishing whether abiogenesis is a statistically regular process under broadly defined planetary conditions, or a unique, highly contingent event.
Serge Dolgikh
openalex   +2 more sources

THE OCTOMORPHIC ORIGIN OF LIFE ABIOGENESIS

This paper presents a geometric mechanism for the origin of life based on the Octomorphic Framework. Instead of treating life as a chemical accident, the model shows how specific coherence structures emerge naturally from the geometry of matter. Using three core quantities — triangle-braidness (TB), phase strain (Delta L), and mean coherence curvature (
Simpson, Brian
openalex   +2 more sources