Diversity

1. Diversity BIO 1113/1114 Oklahoma City Community College Dennis Anderson

2. 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

3. HIV Virus

6. Viral Diseases • AIDS • Chickenpox • Measles • Rabies • Polio • Herpes • Cancer • Flu • Common cold

7. Viruses Mutates Antibody matches spike Antibody does not matches spike

8. 1918 Flu Pandemic Killed 50 Million People

9. Domain Bacteria • Prokaryotic cells • Cell wall • Peptidoglycan • Reproduce by binary fission

10. Lactobacillus acidophilus

11. Streptococcus pyogenes

12. Treponema pallidium

13. 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

14. Bacterial Diseases • Strept throat • Tuberculosis • Diptheria • Pertussis • Tetanus • Syphilis • Plague • MRSA

15. Strept Throat • Steptococcus • Airborne & direct contact • Pharynx and tonsils infected • Sore throat • Fever

16. Tuberculosis • Mycobacterium • Airborne • Cough • Blood in sputum • Weight loss • Fever

17. Diphtheria • Corynebacterium • Airborne • Membrane grows over tonsils • Difficult to breathe • Toxin • Heart • Nervous system

18. Pertussis or Whooping Cough • Bordetella • Airborne • Coughing fits • Whoop sound

19. Tetanus • Clostridium • Puncture wound • Severe muscle spasms • Can’t breathe

20. Syphilis • Treponema • STD • Lesions on genitals • Spread to skin • Damage almost any organ in the body

21. Plague • Yersinia • Bubos • Rat flea • 1357-1350 killed 25,000,000 in Europe • 1900’s killed 20,000,000 in India

22. Plague Survivor

23. MRSAMethicillin Resistant Staphylococcus aureus • Super bug • Resistant to antibiotics • Hospital acquired

24. Bacterial Conjugation

25. Antibiotics • Prevent cell wall synthesis • Prevent protein synthesis

26. Domain Archaea • Prokaryotic cells • Cell wall • Different from bacteria • Cell membrane • Different from bacteria • tRNA different • 56% of DNA new

28. Archaeons • Found everywhere • Very acidic • Very hot • Very salty • Soil • Oceans • Human body

29. Kingdom Protista • Eukaryotic cells • Unicellular • Photosynthetic • Heterotrophic

30. Algae • Chloroplasts • Volvox • Flagella • Colony

31. Photosynthesizing Protists: Algae • Phytoplankton: • float near the surface of water. • they produce most of earth’s oxygen • form the base of aquatic food chains

32. Protozoa • Animal like • Motile • Reproduce • Sexual • Asexual

33. Giardia • Giardiasis • Backpackers disease • Beaver fever • Inhabits intestines of several animals and man • Acquired by drinking water with cysts • Cramping and diarrhea

34. 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

35. Mosquito transmits Plasmodium when she sucks blood

36. Plasmodium ruptures RBCs Simultaneous lysing of RBCs causes the sudden chills & fever typical of malaria

37. The End