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.
Bacteria live in our bodies and in our environment, usually without causing any illness. When bacteria do make us sick, antibiotics are usually available to treat the illness. However, over time, bacteria develop resistance to some types of antibiotics.This means that the drugs are no longer effective at killing the bacteria and the infections become harder to treat. If bacteria are resistant to more than one type of antibiotic, they are called multidrug-resistant organisms, or MDROs.hen bacteria do make us sick, antibiotics are usually available to treat the illness. However, over time, bacteria develop resistance to some types of antibiotics. This means that the drugs are no longer effective at killing the bacteria and the infections become harder to treat.