Pensacola was the first European-inhabited settlement in what would later become the United States of America. The first European settlement in the continental United States was Pensacola, which was established on Santa Rosa Island by conquistador Don Tristan tristÃ¡n De luna Y arellano in. 1559
Alexander Fleming discovered penicillin from mold that contaminated a petri dish of Staphylococcus bacteria. Researchers at Oxford University experimented with the new mold that Alexander Fleming had discovered. Penicillin was actually discovered by mistake.
Essay: The Discovery of Penicillin â¢ Antibiotics are used to kill bacteria. â Originated from fungi. Essay: Modes of Nutrition â¢ Autotrophs. â Photoautotrophy âuse light energy and carbon dioxide to create energy-rich carbon compounds, as do plants, some bacteria, and many protists.â Chemoautotrophy âuse inorganic compounds (hydrogen sulfide, ferrous iron) to fix carbon from carbon dioxide. Some bacteria and archaea. Photoautotrophy âuse light energy and carbon dioxide to create energy-rich carbon compounds, as do plants, some bacteria, and many protists. â Chemoautotrophy âuse inorganic compounds (hydrogen sulfide, ferrous iron) to fix carbon from carbon dioxide. Some bacteria and archaea.