Invisible, but no less important organisms accompany human life everywhere. The organism is our friend or enemy, depending on the type, form and conditions of existence. They can be useful and even necessary, and can become a deadly enemy. After the invention of the microscope, the world was stunned by this, previously invisible, parallel world and its impact on us, large and intelligent creatures.

Microorganisms and science

Studying the simplest microscopic organism is a special discipline Microbiology. By definition scientists, the microorganism is the smallest form of life, mostly unicellular. Rarely, but it happens and acellular or multicellular microbes. The size of these forms of life are measured in hundredths and tenths of a millimeter, and parts not visible to the naked human eye. Biologists have divided the microbial groups: bacteria, mealanie mushrooms, microalgae and yeast.

Microscopic viruses are isolated in a separate branch of study, they are not living organisms, but discovered forms that represent something transitional between a virus and bacteria. They were called Rickettsia. The main goal of research is to determine the true role of microorganisms of various forms in human life and protect his health.

The microorganism is an invisible form of life

Good or bad?

The microorganism is not always a bad thing. Not mindlessly destroy all primitive life forms, such actions would have led to inevitable consequences. Thus, the processes of decay and decomposition of the remains, the processing of food is various forms of micro-organisms.

In its interaction with human activity, animals and plants, the microbes are divided into parasites and saprophytes. Saprophytes is a sort of independent beings that does not affect the body health top. Parasites – organisms living only in the body of the carrier, are also of two types. The first live, but do not cause disease second, pathogenic and cause disease of different severity.

All the little organisms that have such a feature as the ability to easily evolve and change from one form to another. This occurs as a result of several factors: climate change, external conditions, and antibiotics.

Who lives in man?

The person who is unfamiliar with Microbiology even remotely difficult to imagine how many young lives there in him. Even if it is meticulously clean. From the air, unfiltered and unboiled water to our skin are fungi and bacteria in the form of rods and cocci. Mouth and mucous membranes of the nose a variety of live cocci (strepto-, pneumo - or staphylo-). They settle in the plaque. The fight against unwanted door is simple – wash hands frequently, brush your teeth, drink water from reliable sources, or to subject it to boiling and careful filtering.

Not every human organism is the enemy. In the stomach we have friends that live bacteria that work on the process of food processing and separation of vitamins and minerals. Therefore, when necessary, antibiotics the doctors attribute the patient the necessary medications to replenish the beneficial bacterial environment. Low quality food, expired products, failure to comply with the diet – environment for successful breeding of pathogenic microorganisms.

Fungi and yeast

A special kind of microorganisms are invisible mushrooms. To be viable, they settle on substract that contain vegetable substances. Extensive group of fungi, which not only lead to decay and spoilage of fruit products but also can cause serious diseases including cancer. But some useful properties of microorganisms-fungi people have learned to exploit: production of penicillin, cheeses, citric acid.

Fungi that lack a mycelium, is yeast. They have long been used for fermentation in baking industry, in the production of beer and spirits.


Many, many millions of years ago, a source of oxygen and nascent life on Earth was a microorganism is the ancestor of modern cyanobacteria are also called blue-green algae. Actually it is the microbes that only one of the microorganisms produce oxygen through photosynthesis and directly affect climate processes in the atmosphere. Live algae-microbes in water bodies, soil, on damp bark of trees and the cliffs.

The microscopic world is complex and densely populated, full of their processes. Wars and struggle for survival. Only closer by learning and adapting to its laws, people can coexist with small in size but great in meaning microbes.