What hypotheses of the origin of life are known to you?
April 25, 2020
Different ideas about the origin of life can be combined into five hypotheses:
1) creationism – the divine creation of the living;
2) spontaneous nucleation – living organisms arise spontaneously from inanimate matter;
3) the hypothesis of a stationary state – life has always existed;
4) the hypothesis of panspermia – life is brought to our planet from the outside;
5) the hypothesis of biochemical evolution – life arose as a result of processes obeying chemical and physical laws.
||The main provisions of the hypothesis
||the theological and worldview concept, according to which the main forms of the organic world, humanity, planet Earth and the world as a whole, are considered as a direct creation of God, the Creator
|Spontaneous birth of life
||spontaneous generation of creatures of their inanimate materials, spontaneous emergence of living from nonliving
||the hypothesis of the appearance of life on Earth as a result of the introduction of “embryos of life” from outer space. According to the boarding house, the embryos of life scattered in space are transferred from one celestial body to another with meteorites or under the influence of light pressure. This hypothesis does not explain the emergence of life, its essence lies in the fact that life is one of the fundamental properties of matter
||life arose on Earth from inanimate matter, as a result of conditions that took place to be billions of years ago. These conditions included the presence of an energy source, a certain temperature regime, water and other inorganic substances – precursors of organic compounds. The atmosphere was then oxygen free. Oparin distinguishes three stages of the transition of inanimate matter into living:
1) synthesis of the starting organic compounds from inorganic substances in the primary atmosphere of the primeval Earth
2) the formation in primary reservoirs from accumulated organic compounds of biopolymers, lipids, hydrocarbons
3) self-organization of complex organic compounds, the emergence on their basis and evolutionary improvement of the metabolism and reproduction of organic structures, the completion of the formation of a simple cell
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