| Term | Definition |
| Archeozoa | Mastigophora;move using flagella; lack mitochondria,/ EXAMPLESGiardia lamblia : causes diarrhea Trichomonas vaginalis : causes vaginitis |
| Amoebozoa | Sarcodina;move using pseudopodia/EXAMPLES: Entamoeba histolytica: causes bloody dysentery, 10% of humans infected, destroys host RBC, patients are anemia, fecal-oral spread |
| Apicomplexans | Sporozoa;non-motile, very complex life cycles/EXAMPLES:Plasmodium : causes malaria, infects 300 million worldwide, kills millions every year, lifecycle includes humans, wild game, mosquitoes |
| Ciliophora | most free-living, only one pathogen/EXAMPLES:Balantidium coli : causes diarrhea, lives in colon |
| Euglenozoa | have flagella and mitochondria/EXAMPLES:Euglena : photosynthetic (green) Trypanosoma =Hemoflagellate causes African sleeping sickness; chagas disease |
| Dinoflagellates | unicellular algae = Plankton Rigid structure in due to cellulose embedded in the plasma membrane Produce neurotoxins/EXAMPLES: |