How many species of bacteria there? In 1998 American microbiologist working on that the number of bacteria on Earth at that time was five trillion trillion. This number should be thirty five zeros - number impossible to understand. Fortunately, these bacteria are merged into a much smaller number of species. In a strattera 10mg large survey of bacteria, there are two main groups of bacteria and cyanobacteria. Bacteria containing all known species such as E. coli (bacteria Escherichia coli), Salmonella, Staphylococcus, Listeria and clostridia. Cyanobacteria form a particular type of bacteria that are able to photosynthesise - they are also called blue-green algae. Cyanobacteria still exist in large numbers today, but their importance in the development of life on Earth due to their existence here millions of years ago. Cyanobacteria have been very successful and grew up around the world. Their ability to photosynthesise created all the oxygen that is in our atmosphere today. Most living organisms depend on oxygen today and no blue-green algae is very unlikely that this life would be developed. There are seven major groups of bacteria that differ in form and type of cell wall which they possess. Four of the seven types of bacteria most of all:
coca spherical cells, bacteria bacillary. Bacteria or form, with thick cell walls are called gram-positive because they are Gram. Those with thin cell wall are called gram-negative. The four main types are described in more detail below. There are also three other, more rare species of bacteria: spirochetes
: corkscrew forms of bacteria, which are divided into three types that cause specific diseases. Treponema bacteria cause syphilis, frambeziya, leptospiras bacteria cause leptospirosis and Borrelia bacteria causing Lyme disease. Rickettsia: bacteria of the family Rickettsiaceae, which can live and survive inside other living cells. One type causes illness to fever. Mycoplasma: bacteria that have cell walls. They can infect humans and cause pneumonia. Gram-positive cocci are well-known species of staphylococci and streptococci. Bacteria from both belong to the category of friendly bacteria, they do not hurt and perform useful functions in humans and the environment. Some species may be pathogenic. Staphylococcus aureus can cause impetigo and scalded skin syndrome, food poisoning and toxic shock syndrome. Streptococcus pyogenes is usually the culprit responsible for tonsillitis and severe sore throat ("strep throat"), but it can cause many other infections. Gram-positive bacteria include Corynebacterium diphtheria, causing diphtheria, Listeria found in unpasteurized dairy products and responsible for dangerous infections in pregnant women as well as the type of bacteria Lactobacillus, friendly bacteria in the gut. This group also includes the two most dangerous types of bacteria known to man. One is the appearance of Bacillus that causes anthrax, and another Clostridium. One form of Clostridium causes tetanus, another causes botulism, a deadly form of food poisoning. There are two main types of Gram-negative cocci, as belonging to the genus Neisseria. Neisseria meningitidis is a form of meningitis, Neisseria gonorrhea leads to infections, sexually transmitted gonorrhae. Two types often referred to as meningococcus and gonococcus. Gram-negative bacteria are a large and diverse group, which are divided into several categories below. Enterobacteriaceae includes many species that cause food poisoning in humans - Escherichia coli, Salmonella, Shigella, Proteus, and the plague bacteria Yersinia plague. Group contain Vibrio bacteria that are shaped rather someone than rods - and include an error, which is responsible for cholera. Helicobacter Pylori (H.) and Gram-negative bacillus. This bacterium was discovered in the last 25 years as one of the main causes of stomach ulcers. Other gram-negative bacteria Haemophila flu that causes pneumonia, pertussis Bordetella, which causes whooping cough, and Brucella bacteria associated with Brucellosis in cattle. The latter group is Bacteroides, types of bacteria are very common in the human intestine. In fact, they make up a quarter of the dead bacteria in the feces. The main advantage of characterizing different types of bacteria to make identification easier. There are many biochemical tests that can be divided into different groups and different types, which allows doctors to put an accurate diagnosis of bacterial infection. .
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