sentence: Organic molecules are the necessary building blocks for the evolution of life.
sentences_before: No real progress was made until 1924 when Alexander Oparin reasoned that atmospheric oxygen prevented the synthesis of the organic molecules.
sentences_after: The Origin of Life', Weidenfeld and Nicolson, London, pages 199-234.Oparin A.I. 1952. The Origin of Life. These would combine in ever-more complex fashions until they formed droplets. Many modern theories of the origin of life still take Oparin's ideas as a starting point.
concept_name: organic molecule
headings: Origin of life History of studies into the origin of life Haldane and Oparin
categories: Evolutionary biology Molecular biology Prokaryotes Earth sciences