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.
Making the world better, one answer at a time. Pathogenic diseases are caused by what is called a pathogen. Pathogens are parasitic organisms that cause disease int heir host.There are five different groups of pathogens: Viruses, bacteria, fungi, protozoans and parasitic worms. Deficiency diseases are just as the name suggests.They are caused by a deficiency of a particular nutrient in the diet. Hereditary diseases are passed on through generations via their genes.here are five different groups of pathogens: Viruses, bacteria, fungi, protozoans and parasitic worms. Deficiency diseases are just as the name suggests. They are caused by a deficiency of a particular nutrient in the diet.