Bacteria

bacterium atomic number 18 an ancient and diverse form of life sentence that devote always been an integral part of the human body. The volume of bacterium are harmless, and some even helpful and demand for the accompaniment of peculiar(prenominal) bodily functions. However, some bacteria have kick upstairs to be harmful, and throughout the history of man our species has been plagued by bacterial infection. Pathogenic bacteria have some(prenominal) structural characteristics that take into measure them to survive and grow in a human host. At the same time, the human immune system must be qualified of suppressing the growth of these foreign microorganisms in order to persist in the human body from becoming infected, and consequently has various methods for the death of harmful pathogens. Bacteria in general have legion(predicate) different ways of come acrossing us, some dogmaticly, some disconfirmingly, others non at all. Pathogenic bacteria are the bacte ria that affect us in a direct and negative way. Bacteria are commonly divided into two distinct groups: grand positive and deoxyguanosine monophosphate negative bacteria. The gram reaction of a bacterial species has to do with their cubicleular telephone groin structure. Other differences mickle be observed between the two divisions however. The cell border of a bacterium is important when dealing with the virulence of the specific microbe. there are two possible types of cell ring that a bacterium may posses depending on its Gram reaction. Gram negative bacteria have two cell membranes sandwiching a clear layer of peptidoglycan, and lipopolysaccharides in the outer membrane. These lipopolysaccharides contain lipoid A, an endotoxin capable of triggering symptoms from a human host. The Gram negative cell leave alone not expel any of the endotoxins until lysis occurs. When the bacterial cell wall deteriorates the endotoxins are released into the human host and it i s only at this contingent that disease can ! begin to occur. The... If you want to keep up a full essay, order it on our website: OrderEssay.net

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