BIOL 1202 Chapter : Chapter 25 11 24 34 AM
Document Summary
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. Rich in hydrogen, methane, other hydrocarbons and ammonia. Most of these can come from volcanic sources. This process of chemical evolution is called prebiotic evolution. The hypothesis of abiotic formation of organic molecules was tested in 1953 in the laboratory of stanley. A variety of organic compounds were created. short proteins. All the building blocks can arise without life. >>>the building blocks accumulated and the simple molecules condensed into more complex ones. --monomers into polymers need to be in the right place at the right time to connect in the right orientation for condensation reactions to occur. This might have taken place on the surface of minerals (clay) or in oily droplets floating in the prebiotic soup.
