1. Date Session # Activity Page #
Warm Up:
Complete the Essential Evolution Vocab sheet at your desk,
Date
Session #
Activity
Page #
3/2
Essential Genetic Vocab 37
3/3,6
Disease Agents: Bacteria 38
Reproductive Potential of Bacteria 39
Disease Agent: Virus 40
Virus: How do……? 41
Evolution Test:
Tues/Weds March 7 & 8
Review Session: Monday March 6 (8am and after school)

2. 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.

3. BACTERIA
Structure Spread
Treatment Prevention

4. Bacteria Structure Prokaryotic (no membrane enclosed nucleus)
One chromosome
Can live in variety of areas (hot, cold, acid, salty)
Reproduce through binary fission (~mitosis)
Can create endospores when conditions are rough

5. Bacteria Spread through…
contaminated water (cholera and typhoid fever)
food (botulism, E coli & salmonella food poisoning)
air, when infected people sneeze or cough (tuberculosis-TB)
animals (anthrax, cat scratch disease)
touching infected people (strep throat)
Harmless in one part of the body, they can be moved to another part and cause illness (E coli).

6. Treatment of bacterial disease….
Antibiotics
Prevents cell wall formation
Disrupts the proper functions of the bacterial cell
Disinfectants
kills cell wall and membrane
Ex..Lysol, bleach
Materials that Inhibit growth
Soap
Pasteurization: kills the bacteria, but endospores may still survive if not done properly
UV radiation: destroy or mutate the genetic material

7. Prevention of bacterial disease
Hygiene
Properly cooking food
Immunization

8. video
Add two facts from the video to your notes

9. Reproductive Potential of Bacteria p39
Someone at your family picnic has left the chicken salad out….a type of bacteria
in the salad reproduces in favorable conditions every 20 minutes……. 20

10. Reproductive Potential of Bacteria p3
Someone at your family picnic has left the chicken salad out….a type of bacteria
in the salad reproduces in favorable conditions every 20 minutes…….
Someone put the potato salad in the fridge
In these unfavorable conditions
it reproduces every 60 minutes…….

11. Reproductive Potential of Bacteria p3
Someone at your family picnic has left the potato salad out….a type of bacteria
in the salad reproduces in favorable conditions every 20 minutes…….
Bacterial reproduction is
exponential because it doubles
its population with every
generation. Chilling food
slows bacterial growth, but
it doesn’t stop it 40 80
160
320
640
1280
2560
5120
Someone put the potato salad in the fridge
In these unfavorable conditions
it reproduces every 60 minutes…….

12. Formula to calculate reproductive potential of bacteria:
x Initial # of bacterial = total
# of generations

13. VIRUS
Characteristics Spread
Treatment Prevention

14. Virus structure Contain DNA or RNA Have a protective protein coat
Are not living
Operate in a host cell, viruses cannot carry out life-sustaining functions or reproduce without a host
Viruses cannot generate or store energy, are not producers or consumers.
Viruses are cannot survive without living organisms
Viral diseases are the most widespread illnesses in humans
Hijackers…they use the cell’s processes and organelles to create more virus, eventually killing the cell.

16. Spread of viral diseases
Airborne: carried in a water droplet via a sneeze or cough (chicken pox, measles, influenza, small pox…)
Waterborne: spread when contaminated water is drank or food has been prepared with contaminated water (hepatitis A, gastroenteritis)
Animals: person or animal is bitten and virus enters the wound (rabies, west nile, St. Louis encephalitis)
Food-borne: infections are probably contracted by person-to-person contact, most probably via fecal soiled hand to mouth (hepatitis A, gastroenteritis)

17. Viral Invasion YouTube – Flu Attack! How a virus invades
Add two pieces of new information from the video to your notes

18. Treatment of Viral Diseases There is a big difference between bacteria & viruses
Antibiotic drugs usually kill bacteria, but they are not effective against viruses. In some cases, it may be difficult to determine whether bacteria or a virus is causing your symptoms. Many ailments – such as pneumonia, meningitis and diarrhea –can be caused by either type of microbe. Some viral illnesses can be treated with anti-viral medications (flu, shingles)
Usually you must remain hydrated and treat the symptoms while your body’s immune system combats the disease.

19. Prevent the spread of a virus
Get vaccinated
What is a vaccine?
A salt combined with a weakened or small part of the virus is injected into your muscle tissue, damaging the tissue and causing an immune response. Once antibodies reach the injured site, the virus is “noticed” and a full blown immune response to the virus occurs. You create antibodies against the virus. If you are infected with the same virus in the future, you will not become ill, your body already has antibodies against it.

20. Prevent the spread of a virus
Get vaccinated
Isolation of the sick
Global monitoring

21. P41 I’m Sick, so what’s the difference? How do …… 1
Venn diagram…compare and contrast bacteria and viruses

22. How……2 How is a disease causing virus similar to a computer virus?
Explain using analogy.

23. How do……3 …….vaccines protect an individual?
Explain using complete sentences
…….vaccines protect society?