AP BIOLOGY

Detailed explanation-1: -The classic Miller-Urey experiment demonstrated that amino acids, important building blocks of biological proteins, can be synthesized using simple starting materials under simulated prebiotic terrestrial conditions.

Detailed explanation-2: -Using paper chromatography, Miller identified five amino acids present in the solution: glycine, -alanine and -alanine were positively identified, while aspartic acid and -aminobutyric acid (AABA) were less certain, due to the spots being faint.

Detailed explanation-3: -The Miller–Urey experiment provided the first experimental evidence for the “primordial soup” hypothesis-the idea that simple organic compounds, formed when energy triggered chemical reactions in the atmosphere, accumulated in a “soup” such as in oceans or ponds.

Detailed explanation-4: -In this brilliant experiment, Miller and Urey demonstrated that electrical sparking a mixture of methane, ammonia, and hydrogen in the presence of water produces amino acids within a variety of organic compounds.