Microbiology: Small Things can be a Big Deal (HS)

Microbes (microorganisms) are found virtually everywhere on the planet. In fact, some are found in environments where nothing else can survive. There are microbes that live on and inside your body. In fact, they outnumber your own cells. Most of them reside in your large intestine and are necessary for the proper function of your digestion. Microbes have essential roles in many natural processes such as photosynthesis, uptake of nutrients by plant roots, and decomposition of dead or waste material. They are also necessary for producing many of the foods, medicines, etc. that people use. Most microbes are either viruses, bacteria, algae, or fungi. Most bacteria and fungi can be cultured (grown and maintained) in laboratory conditions using nutrient agar. You will culture bacteria and fungi that you find in the air, on common objects in your house, and on your skin.