1. CAST OF CHARACTERS

2. Bacteria Prokaryotic Most numerous Most are non-infectious Mutualistic->Commensalistic->Parasitic Affected by antibiotics

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6. Examples Escherichia coli Staphylococcus – clumps of spherical bacteria Streptococcus – strings of spherical bacteria Bacillius – rod shaped bacteria Vibrio cholerae Haemophilus influenzae Clostridium tetani, Clostridium botulinum

7. Viruses Non-cellular Composed of DNA or RNA(retrovirus) surrounded by a protein coat- a majority of viruses are retroviruses Obligate intracellular parasites Lytic or latent Potential to be eradicated

10. Examples Polio Warts Influenza Cold HIV Hepatitis measles

11. Fungi Eukaryotic Mildly infectious Mushrooms, molds, yeasts, rusts, smuts, mildews

13. Examples Penicillin Dutch elm disease Corn smut Wheat rust Potato blight Candida albicans Aspergillus – mold in the air Athlete’s foot

14. Protists Eukaryotic Mainly protozoans (animal like protists) are infectious Typically have cilia or flagella or pseudopodia

16. Examples Malaria Plasmodium Cryptosporidium Chagas disease Sleeping sickness Amebic dysentery

17. Prions Are proteins Acellular – contain no genetic material

19. Examples Scrapie Kuru Bovine Spongiform encephalopathy Creutzfeldt–Jakob disease