There are several different types of bacteria ...

Bacteria (singular: bacterium) are unicellular organisms that can only be seen through a microscope. They come in different shapes and sizes, and their size is measured in microns - that millionth of a meter. There are several different types of bacteria in the world, and they are everywhere and in all conditions. There are different groups of bacteria that belong to one family, and evolved from one bacterium (ancestors). However, each of these types have their own specific characteristics - which evolved after the separation from the original species. Before the invention of DNA sequencing technology, bacteria is mainly classified based on their form - also known as morphology, biochemistry, and color - I am. is a Gram-positive or Gram staining. Currently, in addition to morphology, DNA sequencing is also used for classification of bacteria. DNA sequencing helps in understanding the relationship between the two types of bacteria I have. is, if they are connected with each other, despite their different forms. In addition to the DNA sequence, shape and other things such as their metabolic activity, the conditions necessary for their growth, biochemical reactions (eg, biochemistry, as mentioned above), antigenic properties and other characteristics are also useful for the classification of bacteria. On the basis of morphology, DNA sequencing, prerequisites, and biochemistry, the researchers came to the following classification >> << from 28 different bacterial phyla Each type further to the number of species and genera of bacteria. In a broad sense, is a bacterial classification includes bacteria that are found in various types of environment, such as sweet water bacteria, ocean water bacteria, bacteria that can survive extreme temperatures (extreme hot as a sulfur spring water of bacteria and cold as in bacteria in Antarctic ice), the bacteria that can survive in very acidic medium, the bacteria that can survive in a highly alkaline medium, the bacteria that can withstand high radiation, aerobic bacteria, anaerobic bacteria, autotrophic bacteria, heterotrophic bacteria, and so on ... Although bacteria are generally classified by the type I am. is the scientific classification of organisms, they can be divided into the following groups for simplicity. Bacterial classification based on the forms as mentioned, before the advent of DNA sequencing, bacteria were classified according to their shape and biochemical properties. Most bacteria belong to three main forms:

rod-shaped bacteria called bacillus - ie, the E. Coli and Salmonella

spherical shape are called cocci bacteria - ie, the Staphylococcus and Streptococcus

spiral-shaped bacteria are called spirilla - ie, the Treponema and Borellia

Some bacteria belong to different forms that are more complex than the forms mentioned above. Bacterial classification based on the methods of staining bacteria are grouped as "gram" and "gram negative" bacteria, based on the results of Gram staining, in which the agent is used to bind to the bacterial cell wall. Gram-positive bacteria - to take up crystal violet dye and retain its blue or purple. Gram-negative bacteria - do not take up crystal violet dye, and therefore appears red or pink. Aerobic and anaerobic bacteria Bacteria are also classified based on the requirement of oxygen for their survival. Aerobic bacteria - Bacteria that require oxygen for their survival. Anaerobic bacteria - bacteria that do not require oxygen to survive. Anaerobic bacteria can not carry oxygen and can die if we have in the oxygen environment. These types of bacteria that are usually found in places such as beneath the surface of the earth, the deep oceans, and the bacteria that live in certain environments. Autotrophic and heterotrophic bacteria is one of the most important types of classification, as it considers the most important aspect of bacterial growth and reproduction. Autotrophic bacteria (also known as autotrophs) to obtain carbon from carbon dioxide requires. Heterotrophic bacteria get sugar from the midst strattera online of them (such as living cells or organisms, they are in). Some autotrophs directly use sunlight to produce sugar from carbon dioxide, while others depend on various chemical reactions. Bacterial classification based on the environment, as we mentioned earlier, the bacteria are found in all types of environments. Although some types of bacteria can withstand extreme conditions, while others require specific conditions of moderate to survive. Based on the environmental conditions of their habitats, bacteria are divided into:

mesophiles - which require mild conditions to survive. Neutrophils - which require mild conditions to survive. Extremophile - which can survive in extreme conditions. Acidophiles - who can not tolerate conditions of low pH. Alkaliphiles - which can withstand high pH conditions. Thermophiles - which can withstand high temperatures. Psychrophilic bacteria - which can survive very cold conditions. Halophiles - that can survive in highly saline conditions. Osmophiles, - which can survive high levels of sugar in osmotic conditions. A large variety that you can see a kind of bacteria makes it almost impossible to come up with the classification, which will include every species on the planet. Add to this the fact that these bacteria are also constantly evolving and adapting to survive the environment in which it was found impossible to live (the best example is the bacteria that live in brine lakes the Mediterranean Sea where the salinity is much higher than the salinity of normal seawater.) and the task becomes more difficult. .