CAST OF CHARACTERS. Bacteria Prokaryotic Most numerous Most are non-infectious...
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Transcript of CAST OF CHARACTERS. Bacteria Prokaryotic Most numerous Most are non-infectious...
Bacteria
• Prokaryotic• Most numerous• Most are non-infectious• Mutualistic->Commensalistic->Parasitic• Affected by antibiotics
• http://www.youtube.com/watch?v=gEwzDydciWc
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
• 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