The Chemical Origin of Life |
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Page 37
... obtained from these bodies by a man or by a special apparatus , but we already have samples of such extra- terrestrial materials in the form of meteorites and , in par- ticular , carbonaceous chondrites . In these latter various organic ...
... obtained from these bodies by a man or by a special apparatus , but we already have samples of such extra- terrestrial materials in the form of meteorites and , in par- ticular , carbonaceous chondrites . In these latter various organic ...
Page 40
... obtained poly- adenine ( mol . wt . 21,000 ) and polyuracil ( mol . wt . 50,000 ) etc. Mixed polymerisations of different nucleotides were also obtained . Schramm has , himself , suggested that the formation of protein - like and ...
... obtained poly- adenine ( mol . wt . 21,000 ) and polyuracil ( mol . wt . 50,000 ) etc. Mixed polymerisations of different nucleotides were also obtained . Schramm has , himself , suggested that the formation of protein - like and ...
Page 107
... obtained in this way , are , however , often susceptible to different in- terpretations . For example , very valuable evidence may be obtained by the isotope analysis of deposits of graphite or pre - Cambrian coals . As regards the most ...
... obtained in this way , are , however , often susceptible to different in- terpretations . For example , very valuable evidence may be obtained by the isotope analysis of deposits of graphite or pre - Cambrian coals . As regards the most ...
Contents
Chapter | 3 |
The Origin of the EARLIEST ORGANISMS | 42 |
THE FURTHER EVOLUTION OF | 74 |
Copyright | |
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Common terms and phrases
abiogenic synthesis actualistic aerobic algae amino acids amount anaerobic arisen atmosphere basis biochemical biological carbon compounds carbonaceous chondrites catalytic chain chemical coacervate droplets comets complicated composition concentration considerable contemporary organisms cosmic course crust deposits Earth electron environment enzymes evolution of organic evolutionary existence external medium formation formed free oxygen further evolution galaxy gases geological gum arabic heavenly bodies heavy elements heterotrophic hydrocarbons hydrogen sulphide hydrosphere increase individual inorganic isotopes large number light living things material mechanisms ment metabolism meteorites microscope model experiments molecular molecules mononucleotide natural selection nucleic acids obtained occur Oparin organic compounds organic substances organisation origin oxidation oxido-reductive oxygen particular period photosynthesis planet polymerisation polymers polynucleotides polypeptides porphyrins possible pre-actualistic present primaeval broth primaeval nutrient broth prolonged evolution protein protobionts pyruvate radiation radioactive reactions reducing residues Riphean Schramm stage stars structure surface surrounding medium tion took place transformations ultraviolet whole