What is microbiology?

Microbiology is the science responsible for the study and analysis of microorganisms, small living things not visible to the human eye (from the Greek “μικρος” mikros “small”, “βιος” bios, “life” and “-λογία” -logía treated , study, science), also known as microbes. It is dedicated to the study of organisms that are only visible through a microscope: prokaryotes and simple eukaryotes. They are all considered living microbes microscopic, they may consist of a single cell and small cellular aggregates formed by equivalent cells (without differentiation); These may be eukaryotic (nucleated cells) such as fungi and protists, prokaryotes (cells without defined nucleus) as bacteria. However the traditional microbiology has been especially busy pathogens among bacteria, viruses and fungi, leaving other microorganisms in the hands of parasitology and other categories of biology.

Although microbiological knowledge that is available today is very broad, much still remains to be known. New discoveries are constantly made in this field. So much so that, according to common estimates, only 1% of existing biosphere microbes have been studied so far. Therefore, although it has been over 300 years since the discovery of microorganisms, the science of microbiology is still in its infancy compared to other biological disciplines such as zoology, botany or even entomology.
Microbiology, especially pathogenic microorganisms to man, relates to categories of medicine and pathology, immunology and epidemiology.

agarA microorganism culture in agar.


Blood agar culture of Staphylococcus aureus.