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Aim: How does a virus infect your body. How does a bacteria infect your body

Aim: How does a virus infect your body. How does a bacteria infect your body. Do now: What is the difference between white a red blood cells?. How pathogens travel. Air: Many viruses (such as the cold and influenza) and some bacteria travel by air

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Aim: How does a virus infect your body. How does a bacteria infect your body

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  1. Aim: How does a virus infect your body. How does a bacteria infect your body Do now: What is the difference between white a red blood cells?

  2. How pathogens travel • Air: Many viruses (such as the cold and influenza) and some bacteria travel by air • Food: Many bacteria and many viruses spread through contaminated food and water • Contact: Sexual contact and fluid exchange (sharing needs) spreads disease

  3. How viruses infect • Viruses are much much smaller than cells and bacteria • They infect their host by grabbing on the cells and injecting their genetic information • Then they duplicate themselves in the Cell and burst out as hundreds

  4. Influenza infecting a human cell http://www.youtube.com/watch?v=Rpj0emEGShQ

  5. Bacteria/protist/parasites infections • Once these pathogens get into you they begin to feed off of you and divide • If they multiply enough, you are infected and soon become sick http://videos.howstuffworks.com/health/bacterial-infection-videos-playlist.htm#video-29916

  6. Exit Question What does a virus need to infect your body that a bacteria or parasite does not?

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