Cosmic evolution of the biogenic elements and compounds
Cosmic evolution of the biogenic elements and compounds
复制标题
生物元素和化合物的宇宙演化
DOI：
--
复制
发表时间：
1993
期刊：
影响因子：
--
通讯作者：
I. E. Chiar
中科院分区：
文献类型：
--
作者：
D. Whittet;I. E. Chiar
本文追溯了生源元素H、C、N、O、P和S从宇宙核合成产生到它们被包含在地球表面生命系统中的演化过程。在星际云和原始陨石中存在重要的益生元分子的证据进行了审查。这一发现可能与地球上生命起源的相关性进行了评估，有证据表明，这种分子不能很容易地在原始的CO2占主导地位的地球大气中合成。
SummaryThis paper traces the evolution of the biogenic elements H, C, N, O, P and S from their creation by cosmic nucleosynthesis to their inclusion in living systems on the surface of the Earth. Evidence for the presence of significant prebiotic molecules in interstellar clouds and in primitive meteorites is reviewed. The possible relevance of this discovery to the origin of life on Earth is assessed in the light of evidence suggesting that such molecules could not easily be synthesized in a primitive CO2-dominated terrestrial atmosphere.