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CAST OF CHARACTERS Bacteria • • • • • Prokaryotic Most numerous Most are non-infectious Mutualistic->Commensalistic->Parasitic Affected by antibiotics • http://www.youtube.com/watch?v=gEwzDydc iWc 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 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 Examples • • • • • • • Polio Warts Influenza Cold HIV Hepatitis measles Fungi • Eukaryotic • Mildly infectious • Mushrooms, molds, yeasts, rusts, smuts, mildews Examples • • • • • • • • Penicillin Dutch elm disease Corn smut Wheat rust Potato blight Candida albicans Aspergillus – mold in the air Athlete’s foot Protists • Eukaryotic • Mainly protozoans (animal like protists) are infectious • Typically have cilia or flagella or pseudopodia Examples • • • • • Malaria Plasmodium Cryptosporidium Chagas disease Sleeping sickness Amebic dysentery Prions • Are proteins • Acellular – contain no genetic material Examples • • • • Scrapie Kuru Bovine Spongiform encephalopathy Creutzfeldt–Jakob disease
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