Origins of Life 在线电子书 图书标签: 科普 科幻小说 生物物理 生物 生命起源 philosophy Physics NLB
发表于2024-12-25
Origins of Life 在线电子书 pdf 下载 txt下载 epub 下载 mobi 下载 2024
A book after what is life
评分这本100来页的小书化繁为简的能力强大,逻辑清晰,阅读体验十分愉快,让人惊叹理论科学的神奇。作者自建了一个有关生命起源的玩具数学模型。我感觉最后一章的个人哲学思考和升华有些突兀。
评分Ebook Looking for homeostasis complicated interlocking molecular reaction web counterpart to Delbruck's Bacteriophage from the Bottom-Up
评分这本100来页的小书化繁为简的能力强大,逻辑清晰,阅读体验十分愉快,让人惊叹理论科学的神奇。作者自建了一个有关生命起源的玩具数学模型。我感觉最后一章的个人哲学思考和升华有些突兀。
评分Ebook Looking for homeostasis complicated interlocking molecular reaction web counterpart to Delbruck's Bacteriophage from the Bottom-Up
The plural of the title is purposeful: Dyson advances the hypothesis that life had a double origin. "Either life began only once, with the functions of replication and metabolism already present in rudimentary form and linked together from the beginning, or life began twice, with two separate kinds of creatures, one kind capable of metabolism without exact replication and the other kind capable of replication without metabolism." He sees reasons to favor the second possibility, with metabolizing creatures appearing first. Dyson is a renowned theoretical physicist (professor emeritus at the Institute for Advanced Study in Princeton, N.J.)
How did life on Earth originate? Did replication or metabolism come first in the history of life? In the second edition of the acclaimed Origins of Life, distinguished scientist and science writer Freeman Dyson examines these questions and discusses the two main theories that try to explain how naturally occurring chemicals could organize themselves into living creatures. The majority view is that life began with replicating molecules, the precursors of modern genes. The minority belief is that random populations of molecules evolved metabolic activities before exact replication existed and that natural selection drove the evolution of cells toward greater complexity for a long time without the benefit of genes. Dyson analyzes both of these theories with reference to recent important discoveries by geologists and chemists, aiming to stimulate new experiments that could help decide which theory is correct. This second edition covers the impact revolutionary discoveries such as the existence of ribozymes, enzymes made of RNA; the likelihood that many of the most ancient creatures are thermophilic, living in hot environments; and evidence of life in the most ancient of all terrestrial rocks in Greenland have had on our ideas about how life began. It is a clearly written, fascinating book that will appeal to anyone interested in the origins of life.
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Origins of Life 在线电子书 pdf 下载 txt下载 epub 下载 mobi 下载 2024