1. Microorganisms

2. Types of Microorganisms
Bacteria
Protozoa
Fungi
Rickettsiae
Viruses

3. Bacteria Bacteria is a simple one-cell plant that multiply rapidly.
Classified by shape and arrangements.
Types of bacteria are:
Cocci.
Dipplococci
Streptococci.
Staphylococci.
Bacilli.
Spirilla.

4. COCCI A bacteria that is round or spherical in shape Types of Cocci
Diplococci- occurs in pairs
Strepococci- occurs in chains
Staphococci- occurs in clusters or groups

5. Diplococci Occurs in pairs Diseases caused: Gonorrhea Meningitis
Pneumonia

6. Streptococci Occurs in Chains Diseases caused: Strep Throat
Rheumatic Fever

7. Staphylococci Occurs in clusters or groups Diseases caused: Pyogenic
Boils
Wound infections
Toxic Shock

8. Bacilli Bacteria that are rod shaped
Bacilli-, can occur singly, pairs, or in chains.
Have the ability to move due to the presence of flagella..

9. Bacilli, cont’d
Has the ability to form spores which are difficult to kill
Diseases:
Tuberculosis
Tetanus
Pertussis
Diphtheria

10. SPIRILLA spiral or corkscrew in shape
Vibrios or corkscrew spirochete in shape
Diseases caused:
Syphilis
Cholera

11. Protozoa One-celled animals
Found in decayed materials or contaminated H2O
Diseases caused:
Malaria
Amebic dysentery
Trichomonas
African sleeping sickness

12. FUNGI Simple plant-like organism Fungi-live on dead organic matter
Common types:
___Yeasts
molds
Diseases caused:
Ringworms
Athlete’s foot
Histoplasmosis
Yeast Vaginitis
Thrush

13. RICKETTSIAE Parasitic Microorganism
Cannot live ouside of the cell of another living organism
Commonly found on:
Fleas
Ticks
Lice
Mites
Diseases caused:
Typhus fever
Rocky Mountain spotted fever

14. VIRUSES Diseases Caused: Smallest microorganism Common colds
Measles
Mumps
Chickenpox
Herpes
Warts
Influenza(flu)
polio
Smallest microorganism
Visible only in a electron microscope
Cannot reproduce unless inside another living cell
Spread by blood and body secretions
Difficult to kill
Resistant to disinfections
Resistant to antibiotics