Results 91 to 100 of about 2,707 (204)

Step‐by‐Step Towards Biological Homochirality – from Prebiotic Randomness To Perfect Asymmetry

open access: yesChemistry – An Asian Journal, Volume 20, Issue 1, January 2, 2025.
This review focuses on the theories related to the emergence of biological homochirality, from assembly of building blocks at the monomer level, to polymerization into functional homochiral biopolymers. Abstract The history of life's formation and the origin of its stereochemistry are nearly as multifaceted as the life itself.
Ivana Mejdrová   +2 more
wiley   +1 more source

The remarkable cell: Intelligently designed or by evolutionary process?

open access: yesVerbum et Ecclesia, 2013
The objective of this article was to deal with the challenging theme of the Origin of Life. Science has been arguing the when and how of the beginning of life for centuries.
Mark Pretorius
doaj   +1 more source

Bacterial Utilisation of Aliphatic Organics: Is the Dwarf Planet Ceres Habitable?

open access: yesLife, 2022
The regolith environment and associated organic material on Ceres is analogous to environments that existed on Earth 3–4 billion years ago. This has implications not only for abiogenesis and the theory of transpermia, but it provides context for ...
Sahan A. Jayasinghe   +3 more
doaj   +1 more source

Autopoiesis Concepts for Chemical Origins of Life and Synthetic Biology [Stenogram of the popular lecture on the foreign bibliographic seminar] [PDF]

open access: yes, 2017
The monograph (Luisi P.L. "The Emergence of Life: From Chemical Origins to Synthetic Biology", 2010, Cambridge University Press, Cambridge, New York etc., 315 p.) is a well-written, informative book providing a novel view on the interrelation between the
Gradoff, Olle
core  

Valuing life detection missions

open access: yes, 2018
Recent discoveries imply that Early Mars was habitable for life-as-we-know-it; that Enceladus might be habitable; and that many stars have Earth-sized exoplanets whose insolation favors surface liquid water. These exciting discoveries make it more likely
Gaidos, Eric   +2 more
core   +1 more source

Defined folding pattern of poly(rG) supports inherent ability to encode biological information

open access: yesBiopolymers, Volume 115, Issue 6, November 2024.
Abstract The RNA World hypothesis posits that RNA can represent a primitive life form by reproducing itself and demonstrating catalytic activity. However, this hypothesis is incapable of addressing several major origin‐of‐life (OoL) questions. A recently described paradox‐free alternative OoL hypothesis, the Quadruplex (G4) World, is based on the ...
Nickolas Kankia   +4 more
wiley   +1 more source

THE PROTOBIOLOGICAL THEORY OF CEILINGS AND FLOORS, OR CHEMICAL EVOLUTION AS A PLANETARY PROCESS [PDF]

open access: yesFilozofia i Nauka
The article presents a modern protobiological theory based on the classical archetype. It connects the issues of origins of life with the theory of the hierarchy of matter and recognizes that error correction occurs within hierarchical and dynamic living
Alicja Kubica
doaj   +1 more source

The evolution and history of Vinca alkaloids: From the Big Bang to the treatment of pediatric acute leukemia

open access: yesPediatric Blood &Cancer, Volume 71, Issue 11, November 2024.
Abstract An attractive flower from the island of Madagascar has in part saved the lives of thousands of children with acute lymphoblastic leukemia (ALL). Random mutations and alterations to the genome led to the evolution of genes encoding enzymes, which would provide the periwinkle flower an arsenal of secondary metabolites to survive within the ...
Jeffrey W. Taub   +5 more
wiley   +1 more source

Autonomous Development of Compositional Diversity in Self‐Spreading Flat Protocells

open access: yesChemSystemsChem, Volume 6, Issue 6, November 2024.
We present a feasible pathway leading to a rudimentary type of protocell diversity and speciation based on the fusion of flat giant unilamellar lipid vesicles on solid surfaces. Abstract An experimental pathway to the spontaneous generation of compositionally diverse synthetic protocells is presented.
İrep Gözen, Stephen Mann, Aldo Jesorka
wiley   +1 more source

Formation of Amino Acids and Carboxylic Acids in Weakly Reducing Planetary Atmospheres by Solar Energetic Particles from the Young Sun

open access: yesLife, 2023
Life most likely started during the Hadean Eon; however, the environmental conditions which contributed to the complexity of its chemistry are poorly known.
Kensei Kobayashi   +14 more
doaj   +1 more source

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