Homeostasis. The biological definition of homeostasis is âthe tendency of an organism or cell to regulate its internal environment and maintain equilibrium, usually by a system of feedback controls, so as to stabilize health and functioningâ.ositive feedback mechanisms. A positive feedback mechanism is the exact opposite of a negative feedback mechanism. With negative feedback, the output reduces the original effect of the stimulus.
Bacteria produce disease in one of two general ways; some bacteria damage the cells and tissues of the infected organism directly by breaking down the cells for food, other bacteria release toxins (poisons) that travel throughout the body interfering with the normal activity of the host. Pathogens.
Transmission of the disease causing bacteria can occur through: 1  Foodborne- Listeria monocytogenes has been associated with foods such as unpasteurized milk, cheeses, ice cream, raw vegetables, raw and smoked sausages, raw and cooked poultry, all types of raw meats, and raw and smoked fish.