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

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)

KEY CONCEPT Germs cause many diseases in humans.

Crash Course: Disease (4m55m-11m36s) https://www.youtube.com/watch?v=1PLBmUVYYeg

Diseases caused by germs, such as the E Diseases caused by germs, such as the E. Coli bacteria can be fatal (death) 1330-1352, the bacteria that caused the “Black Death” or the Plague originated from fleas on rats Killed approx. 100-200 MILLION people New diseases HIV SARS Avian Flu (bird flu) Swine Flu

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

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

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

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”

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

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

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

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

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

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

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

HIV

Pneumonia

Tuberculosis

Malaria HINT: The mosquito is actually the VECTOR

Hepatitis B

Measles

Influenza

Different pathogens cause common infectious diseases.

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

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

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

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

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)

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

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.