AP BIOLOGY

Detailed explanation-1: -From inorganic compounds to building blocks In 1953, Stanley Miller and Harold Urey did an experiment to test Oparin and Haldane’s ideas. They found that organic molecules could be spontaneously produced under reducing conditions thought to resemble those of early Earth.

Detailed explanation-2: -The Origin of Origins They showed that organic molecules (in this case amino acids) could be created from inorganic materials by natural environmental conditions such as acidic solution, heat and electrical discharge (lightning), without the mediation of enzymes.

Detailed explanation-3: -The Miller-Urey experiment In 1953 American chemists Harold C. Urey and Stanley Miller tested the Oparin-Haldane theory and successfully produced organic molecules from some of the inorganic components thought to have been present on prebiotic Earth.

Detailed explanation-4: -All life on Earth is composed of organic molecules-compounds made of long rings or chains of carbon atoms with other elements attached. Today, most of these organic molecules come from the reduction of carbon dioxide (CO2) through several carbon-fixation pathways, such as photosynthesis in plants.