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 gets into the body â¦ when there is an open wound or an open patch of skin. When a knee is scraped and a person has an open wound, it gives bacteria a chance to come directly into the body. Hope this helps! Bacteria can also enter the body if you have food poisoning.ou also already have bacteria in your body because they live in your intestines and help you digest food.they are also in the air you breathe. not all bacteria is harmless.