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| 1. |
How life is originate from inanimate matter |
| Answer» A British scientist, Haldane, suggested that life originated from simple inorganic\xa0when the earth was formed, it was a hot gaseous mass nitrogen, oxygen, carbon, hydrogen, etc. These elements like water (H2O), carbon dioxide (CO2), methane (CH4), molecules. He believed that containing elements such as combined to form molecules ammonia (NH3), etc. After the formation of water, slowly the earth surface cooled and the inorganic molecules interacted with one another in water to form simple organic molecules such as sugars, fatty acids, amino acids, etc. The energy for these reactions was provided by solar radiations, lightning, volcanic eruptions, etc. This was proved by the experiment of Stanley L. Miller and Harold C. Urey in 1953. They took a mixture of water (H2O), methane (CH4), ammonia (NH3), and hydrogen gas (H2) in a chamber and sparks were passed through this mixture using two electrodes. After one week, 15% of the carbon from methane was converted into amino acids, sugars, etc. These organic molecules are polymerized and assembled to form protein molecules that gave rise to life on earth. | |