1. Bacteria
Kingdom

2. Bacteria were not discovered until the microscope was invented
They are too small to see with the naked eye!
Discovery

3. The Bacterial Cell Prokaryotes: No nucleus or organelles
They still use energy, grow, respond, and reproduce!
The Bacterial Cell

4. Bacteria Structures Most have a cell wall
Flagellum: whip or tail-like structure used for movement
Bacteria Structures

5. Many Shapes

6. Asexual : cell divides in two to form two new cells by binary fission
Reproduce about once every 20 minutes
Some can sexually reproduce
Reproduction

7. Autotrophs
Heterotrophs
Getting Food

8. Two Bacteria Kingdoms Live in extreme environments Produce bad odors
Archaebacteria
Eubacteria
Live in extreme environments
Produce bad odors
Live on and in your body
Beneficial to environment
Two Bacteria Kingdoms

9. Uses for bacteria Food production: Fuel:
Archaebacteria produce methane gas
Food production:
Bacteria growing in milk produce sour cream & yogurt
Recycling:
Bacteria in the soil break down chemicals and return them to the environment
Clean-up
Bacteria can be used to clean-up oil spills
Uses for bacteria

10. Illness & Health
Infectious Diseases: diseases that can be spread between people
Strep Throat, food poisoning, Tuberculosis
Prevention: wash hands/sanitizer

11. Bacteria Review Video

12. Viruses
Non-living particles

13. A Virus is a small particle that invades living things to reproduce
Non-living
Don’t reproduce on own
Don’t use energy
Don’t respond to environment
What is a Virus?

14. Structure Viruses are smaller than bacteria Two parts:
Outer protein coat
Inner core with genetic material
Structure

15. To reproduce viruses must invade another organism: called a host
They act like parasites because the destroy the cells of the organism they invade
Reproduction

16. Virus Reproduction

17. Illness & Health Viral Diseases:
Cold, flu, AIDS, H1N1 etc.
There is no medication for viral disease
Vaccines can help prevent viral infection by building your bodies defenses
Illness & Health