1. 8.L.1 Understand the structure and hazards caused by agents of disease that effect living organisms.
8.L.1.1 Summarize the basic characteristics of viruses, bacteria, fungi and parasites relating to the spread, treatment and prevention of disease.
B Barakat
RMS
Modified: P.McAven

2. What are microorganims?
viruses, bacteria, protozoa, parasites, and some fungi and algae.

3. Micro Organisms Characteristics of micro organisms
Unicellular (single celled organisms)
Microscopic
Very diverse (lots of kinds)

4. A variety of micro organisms cause disease
Virus Bacteria Fungi Parasites

5. Virus are not considered to be living
Viruses
Virus are not considered to be living
but affect living things -- need a host cell
non-living particles
nucleic acid – DNA or RNA
protein coat
need a host cell
Flu Attack! How A Virus Invades Your Body – 3 min

6. Cold Virus Viruses T-4 Virus infects Cell (40 sec)

7. Viruses
Invade healthy cells
Reproduce
Kill healthy cells

8. Viruses
transmitted by human contact
airborne

9. Viruses
transmitted by insects

10. transmitted by water

11. Viruses
Vaccines control/prevent

12. Examples of Common Viruses
Influenza (Flu) Virus
HIV / Aids Virus

13. Viruses
HIV AIDS Virus
Good to show shape of HIV & the incorporation into DNA (1 min)

14. Viruses
Polio Virus

15. Viruses
Chicken Pox Virus

16. Viruses
Yellow Fever Virus

17. Viral Meningitis Virus
Viruses
Viral Meningitis Virus

18. West Nile Virus Viruses Mosquito bite
Redesigning Mosquitos (the deadlist animal min – see beginning

19. Viruses
Ebola Virus

20. Viruses
SARS Virus
severe acute respiratory syndrome

21. Viruses Summary
Non-living – need living host cell
Nucleic acid & protein coat
Invade healthy cells & reproduce
Cause disease
Spread by human contact, insects, air, water
Affect different human body systems
Are controlled by vaccines

22. Virus Reproduction – mutates into the cell’s DNA to make copies
Lysogenic Cycle

23. Virus takes over the cell, reproduce, burst out of the cell. Repeat.
Lytic Cycle

24. T-4 Virus infects Cell (40 sec)
Flu Attack! How A Virus Invades Your Body – 3 min
Good to show shape of HIV & the incorporation into DNA (1 min)
Hepitatis virus enters cell (beginning)
Redesigning Mosquitos (the deadlist animal min – see beginning

26. BACTERIA

27. A variety of micro organisms cause disease
Virus Bacteria Fungi Parasites

28. Bacteria Characteristics of Bacteria Prokaryotic,
Unicellular (single celled)
Live in O2, without O2, in extreme conditions

29. Prokaryotic Cell
Eukaryotic Cell

30. Classification by Kingdom
Virus
Bacteria (2)
Protist
Fungi
Plants
Animals
NOT living
need live host
Microscopic
Prokaryotic Cell
Unicellular
Eukariotic Cell
Multicellular
Visible to naked eye

31. Unicellular Multicellular
Many cells
Specialized cells
the whole organism is one cell
Single-celled
Unicellular

32. Bacteria Grow / Spread Cell grows Copies its DNA or RNA Stretches
Splits into 2 identical cells
Binary fission
Under ideal conditions
Reproduce VERY quickly
Bacteria Reproduction – how fast

33. Bacteria 1 Asexual Reproduction in Bacteria (silent)

35. Bacteria Transmission Direct/Indirect Contact By Droplet Transmission
sneezing, coughing, surfaces
Environmental Sources
mostly in warm moist areas

36. Bacteria Treatment by Antibiotics
Some bacteria cells are resistant, survive, reproduce, new strain of illness.

37. Bacteria
Common Diseases
caused by
Bacteria

38. Bacteria
Rabies

39. Bacteria
Lyme Disease

40. Bacteria bacterial meningitis Transmitted person to person outbreak
How bacterial meningitis affects the body – 1 min – enters blood stream

41. Bacteria
Leprosy

42. Bacteria Summary Prokaryotic (no nucleus) Microscopic -- Unicellular
Lack chlorophyll
Found everywhere
in air, soil, water, and inside of your body and on your skin
Multiply rapidly
Transmitted by contact, droplets, moist areas
Treated with antibiotics

43. Bacteria
classified based on shape
spherical rodlike spiral

45. How bacterial meningitis affects the body – 1 min – enters blood stream
Asexual Reproduction in Bacteria (silent)
13 sec
Bacteria Reproduction – how fast

46. Fungi

47. A variety of micro organisms cause disease
Virus Bacteria Fungi Parasites

48. Characteristics of Fungi
Eukaryotic cell
Heterotrophs (eat other organisms to get & use Σ non-photosynthetic
multi-cellular

49. Fungi
Prokaryotic Cell
Eukaryotic Cell

50. Unicellular Multicellular
Many cells
Specialized cells
the whole organism is one cell
Single-celled
Unicellular

51. Fungi asexual reproduction – make identical copy of self
Reproduce - (make more to spread)
1. by spores
asexual reproduction
– make identical copy of self

52. Fungi asexual reproduction – make identical copy of self
Reproduce - (make more to spread)
1. by spores
asexual reproduction
– make identical copy of self

53. Fungi sexual reproduction – 2 parents – offspring has combo of traits
variation – survival technique

54. Fungi Asexual Sexual Fungi Reproduction in ideal conditions
faster, easier
less favorable conditions
Better chances of being adapted to current conditions
Outcome
Identical organism
Variety of traits in offspring

55. Sexual Reproduction
-Variation in offspring
-Some are more likely to be better adapted
Survival of the Fittest

56. Sexual Reproduction
-Variation in offspring
-Some are more likely to be better adapted
Survival of the Fittest

57. Fungi
Airborne Transmission
imagine it like this

58. Fungi Fungi attack plants & humans our food source
Fungi that attack plants are competing with us for the food source / nutrition.

59. Fungi Fungi attack plants & humans our food source
Fungi that attack plants are competing with us for the food source / nutrition.

60. Fungi
Fungi attack plants & humans
athletes foot

61. Fungi
Fungi treatment
anti-fungal powders, sprays, creams

62. Fungi Summary Eukaryotic cell multi-cellular
Heterotrophs - eat other organisms to get & use Σ non-photosynthetic
Reproduce asexually (spores)
Reproduce sexually
Airborne transmission
Fungi attack plants & humans

63. Protists // Parasites

64. A variety of micro organisms cause disease
Virus Bacteria Fungi Parasites

65. Protist // Parasite Are Protists
Feed on another individual (called the host)
Live on or in their host’s body
Highly specialized
Reside in intestines, bloodstream or tissues

66. Protist // Parasite Tape worm – affixes to small intestine
has no digestive system
absorbs nutrients thru its skin

67. Protist // Parasite

68. Protist // Parasite

69. Protist // Parasite How you get parasites:
eat foods that have parasites (well-done cooking kills them)

70. Protist // Parasite
“Well done, please”

71. Protist // Parasite

72. Protist // Parasite

73. Protist // Parasite Attacks blood cells Can’t take in O2
Can’t make ATP (Σ)

74. Protist // Parasite Malaria
So many protists in blood cells – cause them to burst
chills, fevers
ulcers
diarrhea

75. Protist /Parasite Summary
Feed on another individual (called the host)
Live on or in their host’s body
Highly specialized
Reside in intestines, bloodstream or tissues
Transmit from animal to human host

76. Other Vocabulary
Vectors - an insect or any living carrier that transmits an infectious agent..
Carrier - an individual who serves as host for an infectious agent but who does not show any apparent signs of the illness; may serve as a source of infection for others.