Micro-organisms

By: Julie

Beneficial Effects Neutralise viruses that are attacking our

body. Produce vaccines, antibiotics and other

drugs that fight infections. Helps with the decomposing process. Breaks down waste, dead plants and

animals. Makes nutrients for living things. Makes products like bread, beer and cheese. Certain micro-organisms like bacteria and

yeasts that live on the human skin prevent overgrowth of harmful organisms.

Harmful Effects Makes you sick (viruses, bacteria) Produce toxins that make you ill. Causes plant diseases Too much of bad micro-organisms can keep

good ones from growing. Cause gastrointestinal infections as a result

of the ingestion of contaminated food. Contaminate foods