2-生命的起源與多樣性(存儲版)
【正文】 e development of RNA and DNA as biological information molecules. Evidence suggests that RNA, which can form spontaneously under conditions mimicking those of the early earth, was the first informational molecule. The discovery of RNA ribozymesRNA that can act as an enzymelike catalyst suggests that such catalytic RNA also could have assembled new RNAs from early nucleotides. Certain catalytic RNAs can also carry out sexlike exchanges of pieces of RNA.地球上的細(xì)胞出現(xiàn)的進(jìn)一步演化包括RNA和DNA 的發(fā)展作為生物學(xué)的信息分子。第3個從實(shí)驗(yàn)室獲得的結(jié)構(gòu)是脂質(zhì)體，由磷脂形成的球狀的脂雙層。2. The Emergence of life: Organic and Biological Molecules on a Primitive Planet：原始行星上的有機(jī)和生物分子Evidence for prelife stages of chemical organization es from laboratory experiments that try to duplicate the physical environment and chemical resources of the early earth. These experiments, including the pioneering work of Miller and Urey, have successfully produced organic monomers including amino acids, simple sugars, and nucleic acid bases. The probable next step toward life was the spontaneous linking of such monomers into polymers such as proteinoids and nuclei acids. Current research suggests that likely sites for this polymerization were clay or rock surfaces.生命出現(xiàn)之前時期的化學(xué)構(gòu)成的證據(jù)來自模仿早期地球的物理環(huán)境和化學(xué)資源的實(shí)驗(yàn)。Part II：Glossary
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