BIOL 1202 Chapter : Chapter 25
Document Summary
Need the right chemical makeup and the right environment. The building blocks of macromolecules can be formed from nonliving matter if the conditions are right. Independently hypothesized that the atmosphere of the primitive earth was probably very different from today"s. This process of chemical evolution is called prebiotic evolution. Rich in hydrogen, methane, other hydrocarbons and ammonia. Most of these can come from volcanic sources. The hypothesis of abiotic formation of organic molecules was tested in 1953 in the laboratory of stanley. All the building blocks can arise without life. In 2008, the same experiment was done again and they found all of the amino acids. >>>the building blocks accumulated and the simple molecules condensed into more complex ones. This might have taken place on the surface of minerals (clay) or in oily droplets floating in the. Sidney fox showed that polypeptides (polymers of amino acids) could be produced abioticly.
