BIOL 1202 Study Guide - Midterm Guide: J. B. S. Haldane, Stanley Miller, Alexander Oparin
Document Summary
Chapter 25: the history of life on earth. The building blocks of macromolecules can be formed from nonliving matter if the conditions are right. 1920s and 1930s two researchers: john burdon sanderson haldane (england) and aleksandr i. oparin (russian biochemist) Independently hypothesized that the at(cid:373)osphere of the pri(cid:373)iti(cid:448)e earth (cid:449)as pro(cid:271)a(cid:271)l(cid:455) (cid:448)er(cid:455) differe(cid:374)t fro(cid:373) toda(cid:455)"s. Little or no oxygen: rich in hydrogen, methane, other hydrocarbons, and ammonia, most of these can come from volcanic sources. Prebiotic evolution this process of chemical evolution: evolution before life existed. The hypothesis of abiotic formation of organic molecules was tested in 1953 in the laboratory of stanley miller and harold. Urey: a variety of organic compounds were created, amino acids short proteins. Fatty acids: nucleotides, all the building blocks can arise without life. The building blocks accumulated and the simple molecules condensed into more complex ones: monomers into polymers.
