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Bacteria belonging to the United moneras Monera or one of the five kingdoms in which they grouped the various beings that inhabit our world, according to the classification used and accepted internationally. This Kingdom is composed not only bacteria, also belong to he calls blue-green algae.

This Kingdom, rich in species diversity, groups of organisms called prokaryotes by having a named prokaryotic cell type lacking core surrounded by membrane. In laboratory studies have found that only one circular chromosome and ribosomes that sediment at 70S while eukaryotes do to 80S. When observed by electron microscopy confirms the absence of organelles surrounded by membranes.

Members of this kingdom shall be considered the first settlers or forms of life on Earth, scientific research argue that existed for 3,500,000,000 years ago is that they could be prevailing in the early atmosphere. The formation of oxygen limited to anaerobic environments bacteria (methanogens) or extreme conditions (thermoacidophiles halophilic bacteria and bacteria).
The Monera are single-celled autotrophs or heterotrophs can be found in all environments, some bacteria are truly amazing places like thermophilic bacteria, the bacteria can be stationary or mobile, have the rigid wall asexual reproduction, although they may have genetic information exchanges between individuals of the same species or different species.

Match of the Monera. The eubacteria and archaea

Eubacteria are divided into Gram Gram positve and negative, depending on whether or not stained with Gram stain or reagent.

The Gram +: May be harmful, such as Clostridium botulinum, and beneficial, as Tactobacillos.
The Gram - : May be harmful, such as Treponema pallidum or beneficial as Rhyzobium. The cell wall can not be mycoplasmas as Mycoplasma Pallidum.

can be photosynthetic or chemosynthetic heterotrophs. Among the latter are the saprophytes that cause putrefaction to ferment and parasitic pathogens.

Archaea may be:

methanogens: are anaerobic bacteria. Reduce CO2 carbon dioxide and release methane CH4.

halophilic : These bacteria are found in environments with high salt concentrations.

thermoacidophiles: bacteria living in acidic hot springs.

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The Microscope

An essential tool for the study and research in life sciences and medicine is the microscope, the basic instrument for the observation of small organisms and their structures as in the case of bacteria, protozoa and unicellular fungi. Microscope
The term comes from Greek, meaning small mikro skop referred to the vision. The invention of the microscope is discussed, while Italian named Galileo Galilei (1564-1642), the Dutch show the optician Zacharias Janssen (1580-1638).

The microscope is the instrument used in laboratories studying microorganisms. Its purpose is to amplify the image of a small object. There are two types of microscopes: the optical and electronic. Experienced
and almost playing with different lenses were invented, by chance, the first microscope, the optical instrument in a very rudimentary structure, consisting of a tube 8 cm. lenses at the ends. It was also a Dutchman, Antonie van Leeuwenhoek (1623-1723) who succeeded in perfecting able to observe the microscopic organisms in stagnant water such as Paramecium and other, spermatozoa and bacteria.
The breakthrough in the history of the microscope happens with the appearance of the electron microscope where the light is replaced by electrons and lens by magnetic fields. The first electron microscope is due to Canadian physicist James Hillier. The resolution of the microscope has been refined over the years coming up to extend the image of the microorganisms to 100 million times.
microscopes are essential in the process of scientific research and industrial sector. There are multiple uses and applications of the microscope, for example in the field of medicine has advanced knowledge of diseases and therefore in the process of developing measures preventive and curative. Forensic also has benefited from the use of the microscope is used as the solve crimes.
in disciplines such as geology and archeology are used to analyze pieces of rock and identify archaeological properties of the objects found in this case the microscope is modified in structure called a stereoscope.
Other fields where the microscope has played a leading role was in Food and Food Processing, Biotechnology and Industrial Research.

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