1. Bacteria
It’s everywhere!!

2. What do these two things have in common?
Yogurt Swiss Cheese

3. Bacteria (Monera) are tiny living things
Can only be seen by
a microscope

4. Bacteria can be found everywhere living things exist.

5. Bacteria comes in three shapes

6. Not discovered until the late 1600’s.
Anton van Leeuwenhoek found bacteria by accident
He made microscopes
Looked at scrapings of his teeth

7. Good Bacteria  help to break down (clean up) dead things.
Called decomposers

8. 2 types of bacteria
Archaebacteria: live in extreme environment like the Great Salt Lake, mud at bottom of swamps, and sewage.
Bacteria are what cause the bad smells at these places
Eubacteria: live everywhere else. Most are useful or harmless

9. Food Good Bacteria  Yogurt Cheese Pickles Buttermilk Cottage cheese
Sauerkraut
Sour cream

10. Good Bacteria  We have bacteria on our skin and inside our bodies.
Bacteria in our body helps to make us healthy and digest our food! 
Vaccinations

11. Bad Bacteria 
Bacteria can feed off of old food.

12. Bad Bacteria 
Bacteria can spoil dairy products

13. Bad Bacteria  Not all bacteria attack food. Some produce Diseases!
Botulism
Strep throat
Pneumonia
Whooping cough
Lyme disease

14. You can be safe from bad bacteria!
Bacteria can’t survive in high temperatures
Be sure to wash dishes in hot water!

15. You can be safe from bad bacteria!
Freezing and refrigeration may kill harmful bacteria, or at least slow it down!

16. You can be safe from bad bacteria!
Bacteria can be killed with disinfectants

17. Sometimes, harmful bacteria can enter our bodies.
The doctor can give us antibiotics.
Vaccines can help stop
the bacteria before t
hey enter your body!

18. How can you fight bad bacteria?
Be sure to wash dishes in hot water!
Freezing and refrigeration may kill harmful bacteria, or at least slow it down!
Bacteria can be killed with disinfectants
The doctor can give us antibiotics or vaccines.

19. Foldable Bacteria are living single celled organisms.
Most are harmless
A few are pathogens that can make you sick
Classified by shape
Help us digest food
Used to make insulin
Decompomsers: break down dead things
Found in cheese, pickles, and yogurt
We should wash our hands often!
Can be treated with antibiotics
Can only be seen with a microscope