A pathogenic organism is a bacterium, fungus, prion or virus that survives by feeding off of a host. A pathogenic organism typically causes disease in the host organism. More »

A non-pathogenic organism is an organism that does not cause disease when consumed or while living in a host organism. Organisms that can cause illness and disease are known as "pathogenic." More »

All pathogenic bacteria, by definition, live inside the human body, because that is the method by which they cause disease. A pathogen is anything that causes disease in its host; without the host, disease is not possibl... More »

Parasites are organisms that exist on or in another organism and survive by feeding off the host. According to the Centers for Disease Control and Prevention, the three main types of parasites that cause disease in human... More »

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Fungi are aerobic organisms; they must have free oxygen to survive. They cannot create their own food using the sun like a plant does. Fungi must get their energy from living off of dead plants and other fungi. More »

The basic morphology of a fungi takes place in two different methods: the release of spores, and by individual cells that multiply by a process known as budding, or fission. More »

A fungus is a eukaryotic organism that cannot produce its own food via photosynthesis, has cell walls that contain chitin and reproduces via the use of spores, according to the University of Hawaii. Common examples of fu... More »