论文部分内容阅读
38亿年前的地球对生命而言是极端可怕的——地上空间中到处都是强烈的紫外线;天空中飘落着极酸的酸雨;电闪雷鸣风暴肆虐;大气中氧的含量非常稀少,连1%都不到(现在大气中氧的含量是20%);火山活动频繁;偶尔还有陨石撞击……不过,正是在这种恶劣的环境下,生命开始了萌芽准备。现在的一种说法认为,原始大气主要是由甲烷、氢和氨构成,甲烷和氨在雷电的作用下发生了反应,生成了氨基酸和碱基等有机分子,随后又生成了蛋白质和核酸这种构成生命的“材料”。这些物质随雨降落溶入海水中,又变成了作为生命材料的更复杂的分子,使海洋变成了能孕育生命的“原始汤”。
The Earth, 3.8 billion years ago, was extremely frightening to life - there was intense ultraviolet radiation everywhere in the sky; extremely sour rain fell in the sky; thunderstorms thundered; the oxygen content of the atmosphere was scarce Less than 1% (now the oxygen content in the atmosphere is 20%); frequent volcanic activity; occasional meteorite strikes ... However, it is in this harsh environment that life begins to prepare. Now a view that the original atmosphere is mainly composed of methane, hydrogen and ammonia, methane and ammonia under the action of thunder and lightning react to produce organic molecules such as amino acids and bases, followed by the formation of such proteins and nucleic acids The “material” that constitutes life. As these rain drops into the sea, they become more complex molecules as living materials, turning the oceans into life-giving raw soups.