Microbiology is the study of organisms that are mostly too small to be seen by the unaided human eye. Microorganisms include protozoa, algae, fungi, lichens, bacteria and viruses.
Microbiology is one of the most important and exciting of the biological sciences.
As a basic biological science, microbiology has provided much of our current understanding of the chemical and physical principles behind living processes. It is also an applied biological science, dealing with aspects of medicine, agriculture, biotechnology, food technology and pollution control.