BIOL 2303 Lecture Notes - Lecture 2: Photon, Gram-Negative Bacteria, Antonie Van Leeuwenhoek
Document Summary
First descriptions of microbes were made after the invention of the microscope in the. Microbiology as an experimental science took off in the 19th century. Ferdinand cohn: founded the field of bacterial classification and discovered bacterial endospores. Louis pasteur: spontaneous generation: the hypothesis that life arises spontaneously from non- living materials. Pasteur developed vaccines for anthrax, fowl cholera and rabies. Robert koch and the beginning of medical microbiology. Koch suspected pathogen must be present in all cases of disease and is absent from healthy individuals. Koch suspected pathogen must be grown in pure culture. Suspected cells from a pure culture must cause disease in a healthy individual. Suspected pathogen must be re-isolated and shown to the same as the original pure culture. Koch identified causative agents of anthrax and tuberculosis and won the noble prize in. Microbes are very small- so we need microscopes to see them.