1. 31.1 Pathogens and Human Illness
Set up Cornell Notes on pg.57
Topic: 31.1 Pathogens and Human Illness
Essential Question(s):
Give REAL LIFE examples of how pathogens enter the body
Direct Contact
Indirect Contact
31.1 Pathogens and Human Illness
2.1 Atoms, Ions, and Molecules
KEY CONCEPT Germs cause many diseases in humans

2. 1. Hypothesize what you think this organism is doing in the picture
1. Hypothesize what you think this organism is doing in the picture. (BONUS: ID this guy)
2. Hypothesize why you do not get sick EVERYTIME disease causing germs invade your body.
Pg. 57
White blood cell
E. Coli (bacteria)

3. KEY CONCEPT Germs cause many diseases in humans.

4. Crash Course: Disease (4m55m-11m36s)

5. Diseases caused by germs, such as the E
Diseases caused by germs, such as the E. Coli bacteria can be fatal (death)
, the bacteria that caused the “Black Death” or the Plague originated from fleas on rats
Killed approx.
MILLION
people
New diseases
HIV
SARS
Avian Flu (bird flu)
Swine Flu

6. Germ theory proposed that microorganisms cause diseases.
led to rapid advances in understanding disease
Can be infectious (polio, flu), caused by germs
or noninfectious (cancer, heart disease), caused by genes or lifestyle

7. Pathogens are disease-causing agents
What would happen if pathogens were eliminated?
We wouldn’t get sick

8. 10 minutes!!!! P. 940-944 Pg. 56 Pathogens
Bacteria Viruses Fungi Protozoa Parasites
10 minutes!!!! P

9. are single-celled organisms. cause illness by destroying cells
Bacteria
are single-celled organisms.
cause illness by destroying cells
release toxic chemicals
Can be treated/killed with antibiotics or antiseptics
Exs:
E. Coli
Salmonella
“Food Poisoning”

10. Viruses
are disease-causing strands of DNA or RNA that are surrounded by a protein coat
Take over a healthy (host) cell
Forces cells to produce more of the virus
Smaller than bacteria
Can be prevented with vaccines
Exs:
HIV
Influenza
Herpes
*Common Cold

12. Fungi
can be multicellular or single-celled.
take nutrients from host’s cells
occur in warm and damp places
Ex: Athlete’s foot, yeast, mold

13. Protozoa
are single-celled organisms
Prey on other cells
use host cells to complete their life cycles
take nutrients from host cell
Ex: Malaria, dysentery

14. Parasites
are multicellular organisms
grow and feed on a host
possibly kill the host
Ex: Heart worm
Round worm
Elephantiasis- parasitic worms

15. West Nile Virus- mosquito Rabies- rabid animal HIV- infected person
Vectors
any person or animal that carries and transmits a pathogen to another living organism.
Ex:
Lime Disease- ticks
Malaria- mosquito
West Nile Virus- mosquito
Rabies- rabid animal
HIV- infected person
tick

16. Pathogens can enter the body in different ways.
Direct contact require an infected person or animal to physically touch a healthy person
Includes:
kissing
sexual intercourse
hand shaking
bite
Ex: Rabies, HIV
Indirect contact does not require touching an infected individual.
Ex: SARS, TB

17. Time for a Little Guessing Game…
Guess the pathogen AND how the disease spreads
On the poster you have been given, draw this table
Remember: Whisper quietly as to not allow other teams to hear your answers HINT: use the systems affected to help

18. HIV

19. Pneumonia

20. Tuberculosis

21. Malaria
HINT: The mosquito is actually the VECTOR

22. Hepatitis B

23. Measles

24. Influenza

25. Different pathogens cause common infectious diseases.

26. Set up Cornell Notes on pg. 59
Topic: 31.1 Bacteria vs. Viruses
Essential Question(s):
Double-bubble map comparing and contrasting viruses and bacteria using the book, notes, videos, and REAL LIFE examples of each.
31.1 Bacteria vs. Viruses
2.1 Atoms, Ions, and Molecules

27. Pg. 59 VIRUSES BACTERIA
Take notes from video which will be used to add info to your Double-Bubble Map

28. Viruses vs. Bacteria Videos
Pg. 59
Viruses
The Littlest Assassins (3m38s)
Viruses (1m4s)
How Viruses Work (2m23)
The Influenza Pandemic of 1918 (2m35s)
Viruses Emerging (4m)
Bacteria
Harmful
The Enemy Within: Bacteria (3m)
Harmful Bacteria (1m37s)
Beneficial
Beneficial Bacteria (3m1s)
How Bacteria Can Help (4m34s)
Focus:
How viruses use our cells against us
Beneficial bacteria vs. Harmful bacteria

29. Harmful Bacteria Beneficial Bacteria
Take over ponds, etc.
Kills existing life
Food
Grows on food (spoils)
Mouth
Feed on food in between teeth
Must brush and floss
Infect
Open sores
Difficult to kill
May have a slippery outer capsule
Decomposers
Break down dead material
Soil
Makes it fertile so plants can grow
Intestines
Aids in digestion
Produces vitamins
Food
Cheese, sour cream, yogurt
Medicine-
help fight diseases
Sewage Treatment
Oil spills

30. Treatment/Prevention? (pg. 942 & Notes & Videos)
Classwork
EQ: On pg. 58 please draw a double-bubble map comparing and contrasting bacteria and viruses
REAL LIFE examples
Illustrations
Treatment/Prevention?
(pg. 942 & Notes & Videos)

31. Force cells to produce more virus
Smaller than Bacteria
Have a protein coat
Single- celled
Pathogens
HIV
Bacteria
Viruses
Flu
E. Coli
microscopic
Force cells to produce more virus
Release toxic chemicals
Infectious
Common cold
Larger than viruses

32. Rabbit Island Experiment Case Study: Tuberculosis
Quietly read the case study (highlight crucial info)
Summary of Rabbit Island Experiment (Table)
Class discussion
Clarifying questions
You have until Friday to complete the case study questions
I WANT TIME and CONSIDERATION. This is going into your grade as a QUIZ/ESSAY score.