• Tuesday June 2,2020


We explain to you what microbiology is, what are its branches of study and why it is important. In addition, how it is classified and its history.

An instrument of microbiology is the microscope.
  1. What is microbiology?

Microbiology is one of the branches that integrate biology and focuses on the study of microorganisms . It is dedicated to its classification, description, distribution and analysis of their ways of life and functioning. In the case of pathogenic microorganisms, the microbiology studies, in addition, its form of infection and the mechanisms for its elimination.

The object of study of the microbiology are those organisms that are not perceptible to the human eye, so an instrument of this branch of biology is the microscope, invented in the seventeenth century.

Among the organisms studied by microbiology are eukaryotic and prokaryotic cell aggregates, cells, fungi, viruses and bacteria and all those microscopic elements.

See also: Botany.

  1. Branches of microbiology

Virology studies viruses, classifies them, analyzes their evolution and ways of infecting.

When addressing the microbial agents that generate infectious pathologies, four branches are identified within the microbiology:

  • Parasitology It focuses on the study of parasitism and includes eukaryotic parasites such as helminths, protozoa and arthropods. This branch also addresses diseases or parasitosis that affect plants, humans and animals.
  • Bacteriology. He is dedicated to studying the bacteria and the diseases they generate.
  • Mycology. It is the study of fungi.
  • Virology. It studies viruses, classifies them and analyzes their evolution, structure, ways of infecting and lodging in host cells and their interaction with them. On the other hand, address the diseases that viruses generate and the development of techniques for their cultivation, isolation and exploitation.
  1. Importance of microbiology

In the field of health and medicine, microbiology is of great importance since it is the one that is responsible for studying pathogenic microorganisms such as fungi, viruses, parasites and bacteria that can cause some disease in humans.

From the microbiology the infectious diseases that any patient suffers are studied and thanks to it it is possible to determine which is the most appropriate treatment for each disease and patient.

In addition, the knowledge developed in microbiology is applied in industries of all kinds, for example, in energy, where such knowledge is applied to convert waste into energy sources.

  1. Types of microbiology

Medical microbiology studies disease-causing microorganisms.

Within the microbiology different subdisciplines are identified according to their object of study. Some of them are the following:

  • Health Microbiology It is dedicated to the study of those organisms that contaminate food and put at risk the health of those who consume them.
  • Veterinary Microbiology It is dedicated to the approach of microorganisms that affect the health of animals.
  • Phytopathology It addresses the diseases that some protists, bacteria, viruses or fungi can generate in plantations.
  • Medical microbiology Study those microorganisms that cause disease and consider their treatment and transmission.
  • Agricultural microbiology It addresses the bacteria and fungi that are deposited in the crops and studies how the interaction between them can be beneficial.
  • Microbial genetics Analyze the regulation and organization of microbial genes.
  • Microbial ecology. It addresses the behavior of microbe populations and the interaction with their habitat.
  • Microbial physiology. Study the functioning of microbial cells.
  • Evolutionary microbiology The study of the evolution of microbes is focused.
  1. History of microbiology

Microbiology as a science did not develop until the 19th century but its origins can be found throughout history, so it speaks of four periods:

  • First period. It covers from the antiquity to the first microscopists (it does not have specific dates).
  • Second period. It has its beginnings around 1675 (when Leeuwenhoek discovered the microorganisms) and reaches the mid 1800s.
  • Third period. It begins with the development of microorganism cultures and ends in the mid 1800s, when Koch and Pasteur, with their advances, turned microbiology into a settled science.
  • Fourth period. It has its beginnings in the early 1900s, when specialists approach microorganisms from various angles such as genetics, ecology, biochemistry and physiology.
  1. Microbiology career

A microbiologist identifies microorganisms developing solutions in various areas.

Many universities have a Microbiology career designed to train specialists in this discipline, dedicated to research and development of policies related to microorganisms and infectious diseases.

Graduates in Microbiology are trained to work in fields related to illnesses and diseases, and to manipulate microorganisms to develop solutions in the most diverse areas.

In addition, microbiologists can control the quality of food, pharmaceutical, agricultural and environmental products.

  1. Virus in microbiology

In microbiology, the virus is defined as a genetic agent that has a central region composed of RNA, DNA or nucleic acid . In addition, this nucleus is covered by opsidid proteins and, in some cases, by lipoprotein.

Each virus has enough information to specify its reproductive cycle, and it differs from others by its chemical composition, shape and size.

Viruses began to isolate themselves a few decades ago and that is why there are no certainties about their origins: only the qualities of the present viruses can be analyzed in depth.

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