BI276 Study Guide - Midterm Guide: Antonie Van Leeuwenhoek, Carl Woese, Louis Pasteur
Document Summary
A microorganism is a microscopic organism consisting of a single cell or cell cluster, including the viruses: includes bacteria, fungi, protozoa, and microscopic algae, is essential to maintaining balance between living organisms and chemicals in the environment. Parasitology is the study of protozoa and parasitic worms. Immunology is the study of the immune system. 1665: robert hooke came up with the cell theory. 1684: antoni van leeuwenhoek described microbes as wee animalcules". 1745: john needham found microbes after heating fluids. 1861: louis pasteur disproved the doctrine of spontaneous generation 1, proved microbes to be present in air, and came up with the concept of proper sterility. 1876: robert koch presented proof that bacteria caused disease. The organism should be constantly present in animals suffering from the disease and should not be present in healthy animals. The organisms must be cultivated in a pure culture away from the animal body.
