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Video: Flagella In Bacteria - Types, Functions, Structure And Movement Of Bacteria
Last updated 19 January 2018 at 11:39 pm
Reading time: 4 minutes
For a long time, bacteria were not only the first, but also the only inhabitants of the earth. The body of the bacillus is unicellular, does not have an exact nucleus and is all vague, bacteria are among the simplest unicellulars, over time, many other substances began to inhabit the earth, but the structure of the microbe still remains the most elementary.
By their structure, they are: rod-shaped, spherical, convoluted and spiral. Microbes with a two-celled body structure are rare.
Reproduction occurs by dividing the cell into 2 parts, then the body instantly becomes overgrown with a shell and thus the new body is ready. For reproduction, microbes use a favorable environment, but their requirements for this are not so great. To diversify the breeding environment, bacteria can be transported all over the planet, by wind or water, they are very light and can be carried away very easily.
If necessary, bacteria can form seals, by the accumulation of organisms, if they want to organize some kind of obstacle or try to keep crowded. Microbes are divided into groups based on some differences.
Parasites live on the surfaces of living organisms, plants, they disrupt the microflora and it is on this soil that diseases and infections occur in living organisms. Autotrophs are adapted to feeding through photosynthesis, that is, they live on algae and other plants.
- 1 Purpose and meaning of bacteria
- 2 Structure and nutrition of bacteria
3 Movement of bacteria
3.1 Similar articles
Purpose and meaning of bacteria
Some bacteria are capable of growing and multiplying only under conditions of an oxygen shell, without it, it dies, and some species can absolutely do without oxygen, the third does not make a difference at all in which habitat to exist, they adapt to any of them.
It should be noted that the anaerobic bacterium is directly involved in the breakdown of proteins and fats of dead plants and animals. It is thanks to them that the decay process takes place and an unpleasant smell spreads.
Many people find this unpleasant and difficult to tolerate, although it must be remembered that it is thanks to these bacteria that circulation and exchange occur in nature, dead cells split and disappear.
The significance and meaning of bacilli is extremely great and all vital activity cannot be called parasitic, some of them spoil life and expose people, animals and plants to diseases, but without the existence of bacteria there would be no development of the world, it is not for nothing that they appeared first and initially processed the entire planet and atmosphere land.
It was they who created a favorable environment for the further development of life, they organized layers of mail and peat, created and still maintains the circulation of substances, and also balance the ideal ratio of carbon dioxide and oxygen in the earth's atmosphere.
Undoubtedly, some microbes aggravate disease processes and bring in even more infections, but others are involved in the digestion process and it is not known how the human body would work, without the participation of intestinal microorganisms.
The structure and nutrition of bacteria
In addition to the chaotic movement by means of water and wind, bacteria themselves have the right to choose where to move.
The location of the surrounding flagella in bacteria makes it possible for organisms to move along the surface. A mass of bacteria with numerous flagella has the ability to move in water and on land, determining where and for what purpose the bacteria will go.
Most often, bacterial flagella are thin filaments that start from the membrane of the bacterial body. Some flagellates are equipped with a means of transportation that is much larger than the body itself, which makes it possible to move better and faster on the surface and push through in a not particularly favorable environment or in a mass that has a saturated bacterial background.
The location of flagella and their number can be characterized by their habitat: water or land. Microorganisms that have flagella over the entire surface of the body are called peritrichous.
Each bacillus has a different length and thickness of the flagellum, but from the inside it is always hollow. The next type of monotrich, the prefix mono, speaks for itself and means that the body has only 1 flagellum. It is already much more difficult to move with it.
Complicated microorganisms have flagella, in the form of microtubules. This is an evolutionary step, and such bacteria are a class higher in their body structure, and their movement is much faster and easier.
Thus, the movement of bacteria occurs by rotation or pushing in a compacted environment. Each microbe is adapted to different living conditions and habitats. Scientists have carried out many analyzes and concluded that the movement of microbes is intellectually meaningful and their movement occurs in a deliberate direction.
The purpose of microbes in nature is multifaceted, they were created much earlier by all human evolution and their presence on the planet is endowed with meaning, some of them harm living organisms, but still most of them provide tremendous help and support in the existence of the planet and the entire atmosphere.