Microbiology, along with mathematics, chemistry, and physics, is one of the fundamental branches of basic sciences. The knowledge and detailed study of microorganisms and their functions can establish its use in a variety of applications, from medical, food and environmental, agricultural and industrial field. Thus, microbiology is consolidated as one of the pillars of biotechnology. In this specification the modern general microbiology, which is aimed to study morphology, their arrangements and reactions to staining processes, physiology, metabolism, characterization and identification of microorganisms.