Results 31 to 40 of about 860,302 (306)
Chirality and the Origin of Life [PDF]
Symmetry, 2021 The origin of life, based on the homochirality of biomolecules, is a persistent mystery. Did life begin by using both forms of chirality, and then one of the forms disappeared? Or did the choice of homochirality precede the formation of biomolecules that could ensure replication and information transfer?
openaire +1 more source
Homochirality: a prerequisite or consequence of life? [PDF]
, 2020 Many of the building blocks of life such as amino acids and nucleotides are chiral, i.e., different from their mirror image. Contemporary life selects and synthesizes only one of two possible handednesses.
Brandenburg, Axel, +2 more
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Formation of Thiophene under Simulated Volcanic Hydrothermal Conditions on Earth—Implications for Early Life on Extraterrestrial Planets? [PDF]
, 2021 Thiophene was detected on Mars during the Curiosity mission in 2018. The compound was even suggested as a biomarker due to its possible origin from diagenesis or pyrolysis of biological material.
Claudia Huber +3 more
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Molecules, 2022 The aim of this study was to analyze the microbiome of carrot (Daucus carota subsp. sativus) subjected to minimal pre-treatment (rinsing in organic acid solution) and packaging in a high-oxygen modified atmosphere, and then stored for 17 days under ...
Katarzyna Ratajczak +5 more
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Flexible Proteins at the Origin of Life [PDF]
, 2017 Almost all modern proteins possess well-defined, relatively rigid scaffolds that provide structural preorganization for desired functions. Such scaffolds require the sufficient length of a polypeptide chain and extensive evolutionary optimization.
Michael A. Wilson +2 more
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Molecules, 2020 This study compared the mineral content and bioactive properties of flowers and fruit coming from wild elderberry plants with those of flowers and fruit harvested from elderberry cultivars grown in an orchard.
Karolina Młynarczyk +4 more
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Supernovae and their scientific secrets
He jishu, 2023 Supernovae are the most gorgeous fireworks that people can observe in the universe. Their explosion can produce a maximum luminosity 10 billion times that of the Sun, helping scientists see farther.
LI Zhihong +8 more
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Three Biopolymers and Origin of Life Scenarios. [PDF]
Life (Basel)To track down the possible roots of life, various models for the initial living system composed of different combinations of the three extant biopolymers, RNA, DNA, and proteins, are presented.
Agmon I.
europepmc +2 more sources
Origin of Species before Origin of Life: The Role of Speciation in Chemical Evolution [PDF]
, 2021 Speciation, an evolutionary process by which new species form, is ultimately responsible for the incredible biodiversity that we observe on Earth every day.
Tony Z. Jia +2 more
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Fatty acid profile in fat obtained from edible part of land snails harvested in Poland
Journal of Veterinary Research, 2018 Introduction: The objective was to determine the content of fatty acids in edible snail fat by snail species, collection site, and processing stage.
Szkucik Krzysztof +5 more
doaj +1 more source