Virus y bacterias importancia de salud

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VIRUS AND BACTERIA IMPORTANCE OF HEALTH

The bacteria and the virus cause many of the diseases that they are to us familiar, people often confuse these two Microorganisms. But the virus is different itself as much from the bacteria As to the fish of the giraffes. If in something they are different it is in his size. The virus greatest as soon as they arrive at the size of the smallestbacterium. Another difference is in its structure. The bacterium is complejaque more the virus. A typical bacterium owns a rigid cell wall that surrounds the fluid or cytoplasm within the cell. A bacterium contains all the genetic information necessary to make copies of she herself its DNA in a called structure chromosome. Additionally, it can have loose DNA fragments that float in the cytoplasm calledplasmids. The bacteria also have ribosomas, instruments necessary to talk back the DNA, therefore the bacteria can to reproduce. Some have called filamentous structures flagella that use to move. A virus can or not have an outer shell thorny call envelope. All virus has a protein cover and a heart of genetic matter that can be DNA or ARN. And that is everything. Full stop. Which brings to thefundamental difference its form of Bacterial reproduction Versus. viral reproduction The bacteria contain a genetic plane (ADN) and all the instruments (ribosomas, proteins, etc.) that need stops to reproduce by they themselves. The virus, only contains a limited genetic plane and they do not have necessary the constituent tools. They must invade other cells and kidnap his cellular machinery toreproduce. The virus invades adhering to a cell and injecting their genes or allows that the cells swallow them. Here it is an example of viral infection. This it is a version virus of the fiction film Ally. These are bacteriophage. They are a type of virus that infects bacteria. Here the bacteriophage ones are landing in the surface of a bacterium make a hollow in the cell wall of E. coli. Soon theyinject his genetic matter in the bacterium. When taking advantage the genetic machinery of E. coli, the viral genes order the bacterium to begin to make new parts of the virus. These parts are united to conform a new virus within the bacterium. Possibly, so many virus new takes place within bacterium, what this explodes and dies thus releasing to that new virus that infects more cells!

BACTERIAOf the Greek, bakteria, `bastón', is an abundant group of unicellular organisms and microscopic, that lack differentiated nucleus and they reproduce by simple cellular division. All the bacteria do not have mobility of troops, but those do that it they move thanks to the presence of filamentous appendices denominated flagella (Figure 4). These can be located throughout all the cellular surface orin one or both ends, and can be isolate or reunited in group. Following the direction in which it turns the flagellum, the bacterium can move advancing or being shaken in a concrete direction. The duration of the advances in relation to those of turn, is associate to receiving presents in the bacterial membrane; these variations allow the bacterium to approach certain substances, like nutritionalparticles, and to move away of those adverse environmental conditions. In some aquatic bacteria, that contain rich iron particles, the movement is oriented according to the magnetic field.

STRUCTURE OF A BACTERIUM

Reproduction of the bacteria
The bacteria reproduce generally by bipartition, as it is seen in the following scheme

After the duplication of the DNA, that this directed bythe DNA-polymerase that is in mesosomas, the bacterial wall grows until forming a separating cross-sectional partition of the two new bacteria. But besides this type of asexual reproduction, the bacteria own mechanisms of sexual or parasexual reproduction, by means of which DNA fragments interchange. This sexual reproduction, can be realised by transformation, conjugation or transducción.
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