The Origins of Life on the Earth |
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Page 31
The organic compounds synthesized in the primitive atmosphere and oceans
would have decomposed with time in many different ways. Although organic
compounds could have been resynthesized from the decomposition products if
the ...
The organic compounds synthesized in the primitive atmosphere and oceans
would have decomposed with time in many different ways. Although organic
compounds could have been resynthesized from the decomposition products if
the ...
Page 127
At low temperatures the decomposition of organic compounds and polymers is
slowed down greatly. Furthermore, at low temperatures the concentration of
organic compounds of the eutectic-freezing mechanism could have occurred.
Although ...
At low temperatures the decomposition of organic compounds and polymers is
slowed down greatly. Furthermore, at low temperatures the concentration of
organic compounds of the eutectic-freezing mechanism could have occurred.
Although ...
Page 188
Perhaps in some of these cases the synthetic pathway parallels pathways of
decomposition that involved components of the prebiotic soup. The biosynthesis
of pyrimidines, for example, may parallel their photochemical decomposition in
the ...
Perhaps in some of these cases the synthetic pathway parallels pathways of
decomposition that involved components of the prebiotic soup. The biosynthesis
of pyrimidines, for example, may parallel their photochemical decomposition in
the ...
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Contents
INTRODUCTION | 1 |
GEOLOGICAL EVIDENCE | 16 |
The Present Oxidizing Atmosphere | 34 |
Copyright | |
17 other sections not shown
Common terms and phrases
abundant adenine alanine aldehydes amino acids ammonia ammonium amounts aqueous solution aspartic acid biochemical biological carbon Chem chemical concentration condensation contain COOH cyanamide cyanate cyanoacetylene cyanogen cytosine decomposition electric discharge energy enzyme equilibrium evolution evolved example formaldehyde formation formed genetic geological glutamic acid glycine half-lives hydrogen cyanide hydrolysis hydrolyzed important inorganic isomers L. E. Orgel living organisms lysine mechanism membranes metabolism meteorite methane mixture molecules nitrogen nucleic acids nucleosides obtained occur OH OH OH optically active organic compounds origin oxidation oxygen pathways peptide phosphate phosphorylation photochemical photosynthesis planets poly polymerization polymers polynucleotides polypeptides possible prebiotic conditions prebiotic synthesis Precambrian present primitive atmosphere primitive earth primitive ocean purines pyrimidines reaction replication rocks S. L. Miller S. W. Fox Science sequence solar system stars structure sugars surface t-RNA temperature tetramer thermal ultraviolet light uridine yield