Results 31 to 40 of about 167,907,926 (289)
Impacts and the origin of life [PDF]
Nature, 1989 Consideration is given to the estimate of Maher and Stevenson (1988) of the time at which life could have developed on earth through chemical evolution within a time interval between impact events, assuming chemical or prebiotic evolution times of 100,000 to 10,000,000 yrs.
V R, Oberbeck, G, Fogleman
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Frontiers in Earth Science, 2023 For a hundred years the Saint Jacques area has been known to produce rich Oligocene vertebrate fossils, yet only a handful of previous studies have focused on this area.
Bian Wang +31 more
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Recent Advances in Origins of Life Research by Biophysicists in Japan
Challenges, 2019 Biophysics research tends to focus on utilizing multidisciplinary technologies and interdisciplinary collaborations to study biological phenomena through the lens of chemistry and physics.
Tony Z. Jia, Yutetsu Kuruma
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Formamide and the origin of life [PDF]
Physics of Life Reviews, 2012 The complexity of life boils down to the definition: "self-sustained chemical system capable of undergoing Darwinian evolution" (Joyce, 1994) [1]. The term "self-sustained" implies a set of chemical reactions capable of harnessing energy from the environment, using it to carry out programmed anabolic and catabolic functions.
Raffaele Saladino +4 more
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RNA Back and Forth: Looking through Ribozyme and Viroid Motifs
Viruses, 2019 Current cellular facts allow us to follow the link from chemical to biochemical metabolites, from the ancient to the modern world. In this context, the “RNA world„ hypothesis proposes that early in the evolution of life, the ribozyme was ...
Marie-Christine Maurel +3 more
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Airway remodeling: The Drosophila model permits a purely epithelial perspective
Frontiers in Allergy, 2022 Airway remodeling is an umbrella term for structural changes in the conducting airways that occur in chronic inflammatory lung diseases such as asthma or chronic obstructive pulmonary disease (COPD).
Birte Ehrhardt +7 more
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Diet of the earliest modern humans in East Asia
Frontiers in Plant Science, 2022 Reconstructing diet can offer an improved understanding toward the origin and evolution of modern humans. However, the diet of early modern humans in East Asia is poorly understood.
Yan Wu +7 more
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Viroids and the Origin of Life [PDF]
International Journal of Molecular Sciences, 2021 Viroids are non-coding circular RNA molecules with rod-like or branched structures. They are often ribozymes, characterized by catalytic RNA. They can perform many basic functions of life and may have played a role in evolution since the beginning of life on Earth. They can cleave, join, replicate, and undergo Darwinian evolution.
Moelling, Karin, Broecker, Felix
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Algumas controvérsias sobre a origem da vida Some controversies on the origin of life
Química Nova, 2008 In the present paper some controversies on the origin of life are discussed. Did the first living beings on Earth have an autotrophic or heterotrophic origin? What did come first, genetic code or metabolism? Were cells invented early?
Dimas A. M. Zaia +1 more
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