Results 91 to 100 of about 2,118 (196)
Pediatric 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
The remarkable cell: Intelligently designed or by evolutionary process?
Verbum 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
Autonomous Development of Compositional Diversity in Self‐Spreading Flat Protocells
ChemSystemsChem, 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
Life, 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
Enhanced interplanetary panspermia in the TRAPPIST-1 system [PDF]
PNAS, 114, 6689 (2017), 2017 We present a simple model for estimating the probability of interplanetary panspermia in the recently discovered system of seven planets orbiting the ultracool dwarf star TRAPPIST-1, and find that panspermia is potentially orders of magnitude more likely to occur in the TRAPPIST-1 system compared to the Earth-to-Mars case.
arxiv +1 more source
Biophysical Approach to Understand Life and Cancer
Aging and Cancer, Volume 5, Issue 3, Page 70-90, September 2024.ABSTRACT Background From the perspective of biology, the characteristics of life can be categorized as cellular organizations, homeostasis, metabolism, growth, reproduction and heredity, response to stimuli and adaptation to the environment. From the perspective of physics, living organisms are highly ordered, complex, thermodynamically open systems ...
Nuri Faruk Aykan
wiley +1 more source
Implications of tides for life on exoplanets [PDF]
Astrobiology, Vol. 18, No. 7, 967-982 (2018), 2017 As evident from the nearby examples of Proxima Centauri and TRAPPIST-1, Earth-sized planets in the habitable zone of low-mass stars are common. Here, we focus on such planetary systems and argue that their (oceanic) tides could be more prominent due to stronger tidal forces.
arxiv +1 more source
Clumped Isotope Signatures of Abiotic Methane: The Role of the Combinatorial Isotope Effect
Journal of Geophysical Research: Solid Earth, Volume 129, Issue 7, July 2024.Abstract Methane clumped isotope signatures of abiogenesis may be diagnostic of the origin of methane on Earth and other planetary bodies. We performed synthesis of abiogenic methane in hydrothermal conditions between 130 and 300°C and determined δ13C, δD, Δ13CH3D, and Δ12CH2D2.
Jabrane Labidi +5 more
wiley +1 more source
Atmospheric escape from the TRAPPIST-1 planets and implications for habitability [PDF]
Proceedings of the National Academy of Sciences, Vol. 115, 260-265
(2018), 2017 The presence of an atmosphere over sufficiently long timescales is widely perceived as one of the most prominent criteria associated with planetary surface habitability. We address the crucial question as to whether the seven Earth-sized planets transiting the recently discovered ultracool dwarf star TRAPPIST-1 are capable of retaining their ...
arxiv +1 more source
ChemSystemsChem, Volume 6, Issue 3, May 2024.An automated platform explores the reactions of amino acids in the presence of mineral environments and searches for evidence of the onset of selection. The outcome of oligomerisation is significantly influenced by the presence of different minerals, with certain environments selecting specific fragments that enable the formation defined sequences as a
Silke Asche +5 more
wiley +1 more source