The broad goal of the teaching of undergraduate students in microbiology is to provide an understanding of the natural history of infectious diseases in order to deal with the etiology, pathogenesis, laboratory diagnosis, treatment and control of infections in the community.

Microbiology is the study of microscopic organisms, those being unicellular (single cell), multicellular (cell colony), or acellular (lacking cells). .Bacteria, fungi, viruses, protozoa, and algae are the major groups of microorganisms.