Microbiology is the study of microscopic organisms, such as bacteria, viruses, archaea, fungi, and protozoa. From Greek mīkrosmeans small and bios mean life. In 1976, Antonie van Leeuwenhoek is the scientist who observed and experimented with microscopic organisms with the help of simple microscope of his own design and for his contribution on microbiology, we considered a father of microbiology. Microbiology can be classified into pure and applied science, includes fundamental research on the cell biology, ecology, biochemistry, physiology, evolution and clinical aspects of microorganisms. General Microbiology is the study of microorganisms and their roles in everyday life, medicine, research, and the environment. Cell structure, function, growth, genetics, metabolism, evolution, and ecology of microorganisms, includes the study of disease, infection, and immunology. Applied microbiology is the study of the microbial world and the way it interacts with our own. It looks at how we can harness and utilize the powers of the microbes in areas ranging from biotechnology to pest control, to bio-refineries, to pharmaceutical applications.