Gram positive bacteria are a group of organisms that fall under the phylum Firmicutes. Some bacteria move using a tail-like structure known as flagella.Vary in shape and can, therefore, be classified based on their distinct shapes (Bacilli, Cocci, Spirilli).Being prokaryotes, they lack membrane-bound organelles.Can reproduce asexually ( binary fission) and asexually ( transduction and conjugation etc) - They can also form spores.Some of the main functions of bacteria (in general) include: * Bacteria are neither plants nor animals. * While bacteria can cause disease, they are also useful in medicine, food and other industries. * Bacteria are thought to have been the first living organisms on earth. Zoamastogopera found in the digestive system of termites) or as parasitic organisms that can cause harm and disease in their hosts.
In these environments, bacteria may exist as free-living organisms (making their own food or feeding on dead organic matter etc), in symbiosis with other organisms (e.g. As such, they can be found in different types of environments (ranging from aquatic to the hot rocks of the Mojave Desert).
* While Gram positive and Gram negative bacteria are of clinical significance, not all bacteria in these groups are harmful/cause disease.īacteria are single-celled prokaryotes ubiquitous in nature. The difference between the two groups is as a result of a number of chemical/surface structures that include: Using this technique, bacteria are classified as either Gram positive or Gram negative. In clinical microbiology, phenotypic typing schemes (particularly Gram staining) are some of the most common and effective techniques for bacteria identification.ĭiscovered in 1884, Gram stain technique has proven to be one of the most useful phenotypic classification systems through which bacteria can be identified based on their staining properties and general morphology. To identify Gram positive and Gram negative bacteria a number of approaches are used to classify/identify organisms.
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