1. Prokaryote – cells that
do not have a nucleus
Eukaryote – cells that
have a nucleus

2. Microbiology – the study of microscopic organisms

3. Microbes – microorganisms
3 types of Microbes:
Bacteria
Viruses
Fungi

4. Bacteria Basics Single celled organisms Need a microscope to see
Can be found on most materials and surfaces
Billions on and in your
body right now

5. Bacteria can be found EVERYWHERE
Bacteria Basics
Bacteria can be found EVERYWHERE
with or without oxygen
Extreme hot or cold temps

6. 85% of bacteria are GOOD, 15% are BAD
85% of bacteria are GOOD, 15% are BAD. Our bodies need the good bacteria to live!

7. GOOD vs. BAD Pediococcus - used in production of fermented meats
Lactobacillus casei – found in human intestines and mouth to improve digestion
Leuconostoc cremoris – used in the production of buttermilk and sour cream
Lactobacillus bulgaricus – used in the production of yogurt

8. GOOD vs. BAD Pathogenic E. coli (like O157:H7) Salmonella Listeria
Found in ground beef, contaminated fruits and vegetables
Salmonella
Found in raw meats, poultry, eggs, sprouts, fruit and vegetables
Listeria
Found in deli foods, lunch meats, smoked fish and vegetables
E. coli O157:H7
Salmonella
Listeria

9. Bacteria are ALIVE, meaning that they grow and reproduce
Bacteria Basics
Bacteria are ALIVE, meaning that they grow and reproduce

10. They make copies of themselves by dividing in half
Bacteria Basics
Bacteria grow in number not in size (Humans grow in size from child to adult).
They make copies of themselves by dividing in half

11. How do Bacteria grow?