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several that cause primary infections of the human gastrointestinal tract. Thus, they are referred to as enterics (regardless of whether they cause gut disorders). Bacteria that affect the gastrointestinal tract include certain strains of E...
bacteria in water. These sources of bacterial contamination include runoff from feedlots, pastures, dog runs, and other land areas where animal wastes are deposited. Additional sources include seepage or discharge from septic tanks, sewage ...
trachomatis? Chlamydia trachomatis is a small bacterium that cannot grow outside a living cell. In this respect it resembles a virus, but it is actually a very sophisticated organism. There are two other related organisms: Chlamydia psitta...
only ones characterized by prokaryotic organization. Too tiny to see with the naked eye, a bacterial cell is usually one of three basic shapes; bacillus, a rod shaped cell; coccus, a spherical cell; or spirillum, a spiral cell. A few kinds ...
is a slow-growing facultative intracellular parasite. During infection it is exposed to many different environmental conditions depending on the stage and the severity of the disease. It is able to multiply inside the macrophage phagosome,...
Resistant Bacteria Abstract Antibiotic resistance is a specific type of drug resistance when a microorganism has the ability of withstanding the effects of antibiotics. Antibiotic resistance evolves via natural selection acting upon random ...
of unicellular organisms, are characterized by the absence of cell nucleus surrounded by a shell. However, the genetic material of bacteria (deoxyribonucleic acid or DNA) is in the cell with a definite place - the area called the Nucleoid. ...