1. Bacteria in Your Life
Beneficial & Harmful

2. Beneficial antibiotics- limit the growth of bacteria (kill)
saprophytes- use dead organisms as food and energy sources
nitrogen fixing bacteria- change nitrogen in the air into forms that plants and animals can use
Bioremediation- clean up or remove environmental pollutants
Bacteria in food- cheese, buttermilk, sauerkraut, pickles, soy sauce
Beneficial

3. watch 78% of the air is nitrogen
plants or animals can’t use it in the this form
nitrogen fixing bacteria live in roots of beans & peanuts and have bacteria that convert the nitrogen into usable forms
watch

4. Harmful Bacteria Pathogens- any organism that causes disease
they produce toxins (poisonous substances)
*botulism
-Endospores- produce a thick wall and can exist for years
Harmful Bacteria

5. heating food to temperatures that kill harmful bacteria but do not change the taste of the food
juice
ice cream
yogurt
milk
Pasteurization

6. Treating Bacterial Disease
-with antibiotics (kill bacteria)
with vaccines ( prevent disease by using your white blood cells to build up an immunity to the disease)
Treating Bacterial Disease