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Scientist A. Van Leeuwenhoek, of Holland at first detected the Bacteria in 1676 . Gram Positive Bacteria and Gram Negative Bacteria are mainly the two types of Bacteria .

Azotobactor, Lactobacillus Trichodes, Escherichia coli, Trichoderma Kongi, Clostridium Butricum, Bacillus Subtilis etc are beneficial Bacteria, whereas Salmonella Typhosa, Vibrio Cholerae, Pasteurella Pestis etc. are harmful Bacteria.

Important features of Bacteria

Bacteria are Prokaryotic type and simple in nature. Most of the Bacteria are Chlorophyll less. Bacteria are cellular type.

Bacteria are made of both DNA and RNA. Bacteria can survive in water, land, body of plant and creatures even in the environment without Oxygen.

Typically a few micrometres in length,  bacteria have a number of shapes, ranging from spheres to rods and spirals.

Bacteria were among the first life forms to appear on Earth, and are present in most of its habitats.

 There are typically 40 million bacterial cells in a gram of soil and a million bacterial cells in a millilitre of fresh water. The study of bacteria is known as bacteriology, a branch of microbiology.

Escherichia coli also known as E. coli is a Gram-negative, facultatively anaerobic, rod-shaped bacterium of the genus Escherichia that is commonly found in the lower intestine of warm-blooded organisms

                                                                              A colony of Escherichia coli

Lists of Bacterial Diseases

Diseases                                                                            Microbes

Tuberculosis                                                                    Mycrobacterium tuberculosis

Cholera                                                                              Vibrio Cholarae

Typhoid                                                                             Salmonella Typhi/typhosa

Pheumonia                                                                      Diplococcus Pnenumoniae

Tetanus                                                                               Clostridium tetani

diptheria                                                                               Corrymbacterium diptherae

Leprosy                                                                               Mycobacterium leprac

Plague                                                                                Pasteurella pestis

Gonorrhoea                                                                         Neisseria gonorrhoeal

Whooping cough                                                                Bordetella purtusls

Bacillary dysentery                                                                Schigella sp.

Meningitis                                                                        Neisseria meningitis

Food toxicuation                                                                Colostridium botulinum

Rheumatic fever                                                                 Streptococcus sp.

Boil and wound                                                                 Staphylococcus auraus

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