microorganisms

very tiny living things that usually can only be seen using a microscope

bacteria, virus, fungi

colds, influenza, chickenpox

anti biotics don’t work against them

when a harmless version of a disease is introduced into a person in order to stimulate the production of antibodies and white blood cells against the disease

• some kill bad bacteria - used in genetic engineering eg insulin

tuberculosis, food poisoning, cholera

in the colon of the large intestine

when two organisms live in close association and both of them benefit from the arrangement

• help digestion • produce vit B and K • prevent bad bacteria • boost immune system by keeping bad bacteria under control

bacteria that improve human health

• decompose dead plants and animals • help recycle carbon and nitrogen • used to produce antibiotics

athlete’s foot, ringworm

• help recycle carbon and nitrogen • provide cholesterol-lowering medicine, and medicine to help prevent rejection of transplants • antibiotics are based on chemicals produced by fungi

the acid of the vinegar kills microorganisms

the salt or sugar draws water out of the microorganisms so they die

after using, place in an incubator at 120C for 30 mins. then put in general waste bin. Because some of microoganisms that grow can be disease causing