Everyone knows that the bacteria - the most ancient inhabitants of the planet Earth.They were, according to scientific data, of three to four billion years ago.And for a long time were the only and true masters of the Earth.We can say that it all began with the bacteria.Roughly speaking, the pedigree of all living organisms is carried out on them.So the role of bacteria in human life and nature (its formation) is rather significant.
Ode bacteria
Their structure is very primitive - most of them are single-celled organisms, which obviously changed little for such a very long time.They are unpretentious and can survive in extreme conditions for other organisms (heated to 90 degrees, freezing, thin atmosphere, deep ocean).They live everywhere - in water, soil, underground, in the air inside other living organisms.A one gram of soil, for example, may be detected hundreds of millions of bacteria.Indeed almost perfect creation, existing side by side with us.The role of bacteria in human life and nature.
creators oxygen
Did you know that most likely, without the existence of these small organisms, we have just suffocated.Because they are (mostly cyanobacteria able to produce oxygen by photosynthesis) by virtue of the multiplicity produce vast amounts of oxygen to the atmosphere.This is especially relevant in connection with the cutting of strategic importance for the whole of the Earth Forests.Some other bacteria produce carbon dioxide, which is essential for plant respiration.But the role of bacteria in human life and nature is not limited to this.There are a few "activities" for which bacteria can be safely given an honorary diploma!
orderlies
In nature, one of the functions of bacteria - sanitary.They eat dead skin cells and organisms by disposing unnecessary.It turns out that the bacteria for all life on the planet work peculiar wipers.In science this is called saprotroph.
Circulation of substances
And another important role - participation in the circulation of substances on a global scale.In nature, all materials transferred from organism to organism.Sometimes they are in the atmosphere, sometimes - in the soil, maintaining massive circulation.Without bacteria, these components could be concentrated somewhere in one place, and great cycles would be interrupted.This happens, for example, such substances as nitrogen.
Lactic acid Milk products
- has long been known to people product.But long-term storage has become possible only recently with the invention of methods of conservation and refrigeration units.But since the birth of cattle a person unknowingly used the bacteria for fermentation of milk and production of dairy products a longer storage than the actual milk.For example, dry yogurt could be stored for months and used as a nourishing food during long through desert terrain.In this respect invaluable role of bacteria in human life.After all, if these organisms 'offer' milk, they can make out of it a lot of delicious food and essential.Among them are: yogurt, yogurt, fermented baked milk, sour cream, cottage cheese, cheese.Kefir, of course, is done mainly by fungi, but without the participation of bacteria here is not complete.
great cook
But "pischeobrazuyuschaya" the role of bacteria in human life can not be reduced only to dairy products.There are a lot of us already familiar foods that are produced using these organisms.It sauerkraut, pickled (drum), cucumbers, pickles and loved by many other products.
best in the world "neighbors"
Bacteria - the most numerous organisms in the animal kingdom nature.They live everywhere - all around us, on us, even - within us!And they are very helpful "neighbors" to humans.For example, bifidobacteria strengthen our immune system by increasing the body's resistance to many diseases, help digestion and do much more useful things.Thus, the role of bacteria in human life as a good "neighbor" as invaluable.
Production of useful substances
Scientists have been able to work well with the bacteria that they have been providing the desired result for a man of substance.Often these substances are drugs.So the therapeutic role of bacteria in human life is also great.Some modern drugs produced by or based on their actions.
role of bacteria in the industry
bacteria - great biochemists!In modern industry is widely used it is their property.For example, in recent decades, the production of biogas in some countries reaches significant proportions.
positive and negative role of bacteria
But these microscopic unicellular can not only be human helpers and co-exist with it in full harmony and peace.The greatest danger they pose to themselves - are infectious diseases caused by bacteria.Settling within us, poisoning the tissues of the body, they are certainly harmful, sometimes fatal to humans.Among the most famous of dangerous diseases caused by bacteria, - plague, cholera.Less dangerous angina and pneumonia, for example.Thus, some bacteria may pose a significant risk to humans if they are pathogenic.Therefore, scientists and doctors of all time trying to "keep under review" the harmful microorganisms.
spoilage bacteria
If the meat is rotten and sour soup, for sure, is the "handiwork" of bacteria!They are got there and actually "eat" these products to us.After that, for a man, these dishes are not nutritional value.It remains only to throw away!
Results
When asked what role played by bacteria in a person's life, one can identify both positive and negative aspects.However, it is obvious that the positive properties of the bacteria is much greater than the negative.All the matter in a reasonable person's control over this great kingdom.
