1. Bacteria
Flesh Eating Bacteria

2. What are the two domains of bacteria?
Eubacteria
“Good” or “true” bacteria.
Live everywhere
Cell wall with peptidoglycan
Archaebacteria
“Old” bacteria
Live in extreme environments (hot springs, high salt concentrations, etc)
Cell wall without peptidoglycan

3. What type of cells are bacteria?
Prokaryotic
No Nucleus or membrane bound organelles
Unicellular
Contain one cell

4. Three basic shapes of bacteria
cocci - round shape
bacilli - rod shape
spirillum - spiral shaped

5. Arrangements of bacteria Bacteria can also arrange themselves in different ways according to their shape
Strepto - chains
Staphylo - clusters

6. Arrangement
Streptococcus - Chain

7. Arrangement
Streptobacillus - Chains

8. Arrangement
Dicoccus - Two

9. Arrangement
Staphylococcus - Clusters

10. Basic parts of a bacterium
Nuclear Material (DNA)
NO NUCLEUS!!!!
Cytoplasm
Ribosomes
Cell Membrane
Cell wall
with and without peptidoglycan
Gram positive and gram negative (only Eubacteria)
Plasmid (circular loop of DNA)
Fagellum

11. What is a flagellum?
Used for locomotion

12. What ways do they move? Flagellum Slime Spiral Movement No Movement
Long whip-like tail (shown)
Slime
Slime layer used to slide
Spiral Movement
Spiral twisting
No Movement

13. What two ways do bacteria reproduce?
Asexual
Binary Fission
Identical Cells
Sexual
Conjugation then
binary fission
New Genetically Different Cells

14. How do bacteria obtain food?
Autotroph
Make it themselves with the help of light or inorganic matter and chemicals
Heterotroph
Breakdown food, dead or decaying matter (organic matter).
decomposer

15. Do bacteria need oxygen?
Yes
Some need oxygen to help break down food. No
Some cannot use oxygen and it is like poison to them and kills the bacteria.

16. What good do bacteria do for the planet?
Fuel
Some Archaebacteria produces methane
Food
Bacteria assist in making food such as yogurt, pickles, cheese, apple cider.
Recycling
Breaking down dead and decaying matter (decomposer).
Some bacteria are used to clean up oil spills.
Symbiotic Relationships
E. coli Vitamin K in Human Intestines
Cow gut

17. Microbial Friends Escherichia coli Lactobacillus acidophilus
Aids in food digestion
Lactobacillus acidophilus
Turns milk into yogurt
Streptomycin
Makes streptomycin, an antibiotic

18. What are some bad things bacteria do on the planet?
Spoil food
Cause Disease
Food Poisoning
Lyme Disease
Strep Throat
Tuberculosis (TB)
Producing toxins that harm living things
Tetanus, Botulism, Anthrax

19. How can you treat and prevent bacterial diseases?
Antibiotic
chemical that kills bacteria or slows their growth without harming the body cells of humans
Vaccine
substance used in a vaccination that consists of pathogens that have been weakened or killed, but can still trigger the immune system into action.