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Diversity. BIO 1113/1114 Oklahoma City Community College Dennis Anderson. Virus. Virus invades a body cell Virus forces body cell to make new viruses Virus often kills body cell after it has made new viruses. HIV Virus. Viral Diseases. AIDS Chickenpox Measles Rabies Polio Herpes
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Diversity BIO 1113/1114 Oklahoma City Community College Dennis Anderson
Virus • Virus invades a body cell • Virus forces body cell to make new viruses • Virus often kills body cell after it has made new viruses
Viral Diseases • AIDS • Chickenpox • Measles • Rabies • Polio • Herpes • Cancer • Flu • Common cold
Viruses Mutates Antibody matches spike Antibody does not matches spike
Domain Bacteria • Prokaryotic cells • Cell wall • Peptidoglycan • Reproduce by binary fission
scalp nasal passages about 200species ofresidentbacteria inmouth skin few residentbacteria instomachbecause of its acidic pH digestivetract armpit 500-1,000species ofresidentbacteria inlarge intestine rectum vagina Figure 21.8
Bacterial Diseases • Strept throat • Tuberculosis • Diptheria • Pertussis • Tetanus • Syphilis • Plague • MRSA
Strept Throat • Steptococcus • Airborne & direct contact • Pharynx and tonsils infected • Sore throat • Fever
Tuberculosis • Mycobacterium • Airborne • Cough • Blood in sputum • Weight loss • Fever
Diphtheria • Corynebacterium • Airborne • Membrane grows over tonsils • Difficult to breathe • Toxin • Heart • Nervous system
Pertussis or Whooping Cough • Bordetella • Airborne • Coughing fits • Whoop sound
Tetanus • Clostridium • Puncture wound • Severe muscle spasms • Can’t breathe
Syphilis • Treponema • STD • Lesions on genitals • Spread to skin • Damage almost any organ in the body
Plague • Yersinia • Bubos • Rat flea • 1357-1350 killed 25,000,000 in Europe • 1900’s killed 20,000,000 in India
MRSAMethicillin Resistant Staphylococcus aureus • Super bug • Resistant to antibiotics • Hospital acquired
Antibiotics • Prevent cell wall synthesis • Prevent protein synthesis
Domain Archaea • Prokaryotic cells • Cell wall • Different from bacteria • Cell membrane • Different from bacteria • tRNA different • 56% of DNA new
Archaeons • Found everywhere • Very acidic • Very hot • Very salty • Soil • Oceans • Human body
Kingdom Protista • Eukaryotic cells • Unicellular • Photosynthetic • Heterotrophic
Algae • Chloroplasts • Volvox • Flagella • Colony
Photosynthesizing Protists: Algae • Phytoplankton: • float near the surface of water. • they produce most of earth’s oxygen • form the base of aquatic food chains
Protozoa • Animal like • Motile • Reproduce • Sexual • Asexual
Giardia • Giardiasis • Backpackers disease • Beaver fever • Inhabits intestines of several animals and man • Acquired by drinking water with cysts • Cramping and diarrhea
Plasmodium • Malaria • Most important parasitic disease of humans today • WHO estimates that 270 million new cases occur annually with 2 million annual deaths • Transmitted by the bite of infected mosquitoes of genusAnopheles
Plasmodium ruptures RBCs Simultaneous lysing of RBCs causes the sudden chills & fever typical of malaria