In 1929, separately, two scientists, Alexander Oparin and John Haldane, published the same event (except for some details) on the origin of life. According to scientists, when the formation of the Earth, the atmosphere was formed mainly by four gases: hydrogen, water vapour, ammonia and methane. These compounds have reacted so spontaneously and, in the course of these reactions, the atoms of carbon, hydrogen, oxygen and nitrogen se, íam recombinant form by abiotična synthesis, the first
organic compound. The
energy required for these
reactions had origin in solar radiation (especially ultraviolet), electrical discharges of lightning, radiation, radioactive element, heat from volcanic areas. After its formation in the atmosphere primitive, the first compound would have been transported by rain to rivers, lakes and oceans where they accumulated in large quantities. Given the high concentration, the
molecules chocavam among themselves giving up spontaneous reactions. For molecular evolution or chemical (the transformation of simple molecules into more complex molecules), emerged all types of organic molecules necessary for the emergence of life. Some of these molecules, which were appointed by Haldane as "primitive soup", it is íam cluster spontaneously forming small groups and isolated through a semi-permeable membrane (enabled exchange of
substances with the environment), causing
forms pre - Biological. In these ways to give it íam already chemical reactions important for life. The forms pre-biological forms have originated then increasingly complex that would be capable of carrying out exchanges with the environment, to grow and get energy from the middle of substances (probably in the middle where it developed, it is formed would glucose and the process of obtaining energy would certainly have been the fermentation in the absence of oxygen). For the development of forms pre-biological, arise the first forms of life: the cell - would anaerobic bacteria, which are fed to organic substances abiotična of origin of the medium. Consequently, for the
Biological development, the first forms of life increased their complexity autotróficas causing cells, eukaryotic, aerobic and by continuing to evolve, have resulted in the diversity of living things on Earth exists today.
More abstracts about the Origin of life: Oparin-Haldane's assumption