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The Best Chemical for Cleaning and Disease Prevention

"Discover the most effective chemical for cleaning and preventing disease with this step-by-step guide. Also explore how microbes spread and the role of antibiotics."

bernardbrown
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The Best Chemical for Cleaning and Disease Prevention

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  1. Which chemical cleans best? How dirty is your desk?

  2. Step 1 lid bottom with agar bottom with agar lid Turn your Petri dish upside down

  3. Step 2 bottom On the bottom of your Petri dish write your initials and the date Miss O 10/09/2010

  4. Step 3 bottom Mark the bottom of your Petri dish into quarters Miss O 10/09/2010

  5. Step 4 bottom In each quarter write the object and which chemical was used Miss O 10/09/2010 Table and Lemon Juice Miss O 10/09/2010 Table

  6. Step 5 bottom with agar lid Flip over your Petri dish so the lid is back on top Dip one of your cotton buds in water and rub what you want to test lid bottom with agar

  7. Step 6 Take the lid off your Petri dish Wiggle your cotton bud on the agar GENTLY Miss O 10/09/2010 Table Remember to put it in the right quarter

  8. Step 7 Put the lid back on your Petri dish between each test Put the used cotton bud in disinfectant Clean the object using your chemical and a paper towel, then re-swab onto agar

  9. Step 8 Miss O 10/09/2010 When you have tested both object twice (clean and dirty) seal your dish with sellotape

  10. How much growth? Rate the level of growth 0, 1, 2 or 3 Nothing is growing Completely covered in growth 0 3 Miss O 10/09/2010 2 1 Mostly covered in growth A couple areas of growth

  11. What cleans best? Rate the level of growth 0, 1, 2 or 3 Use the class average results to construct a bar graph.

  12. How is disease spread?

  13. Eye Nose and Throat Produce tears which contain a digestive juice which digests pathogens. Mucus traps pathogens and hair brushes them out Mouth Saliva contains digestive juices which break down pathogens. Ear Produce wax to trap any pathogens Stomach Acid destroys pathogens before they can reach the small intestine. Skin As a whole it acts as a barrier to pathogens If it is damaged a scab will form Reproductive Organs Acidic conditions in the vagina help to kill pathogens.

  14. What happens if microbes get past the first line of defence?

  15. Antibiotics What do antibiotics do?

  16. Antibiotics Antibiotics only kill bacteria. (they don’t work on viruses!) They kill any bacteria; good and bad.

  17. Antibiotic Resistance http://www.brainpop.com/science/ecologyandbehavior/antibioticresistance/

  18. Viruses http://www.brainpop.com/health/diseasesinjuriesandconditions/viruses/ HIV http://www.brainpop.com/health/diseasesinjuriesandconditions/aids/ Antibiotic Resistance http://www.brainpop.com/science/ecologyandbehavior/antibioticresistance/ Avian flu http://www.brainpop.com/health/diseasesinjuriesandconditions/avianflu/ Swine flu http://www.brainpop.com/health/diseasesinjuriesandconditions/swineflu/ Protozoa http://www.brainpop.com/science/diversityoflife/protozoa/ http://www.brainpop.com/science/diversityoflife/protists/ Microbes http://www.bam.gov/sub_diseases/diseases_immuneplatoon_microbes.html Immune system cartoon http://www.bam.gov/sub_diseases/diseases_immuneplatoon.html BACTERIA http://www.brainpop.com/science/diversityoflife/bacteria/

  19. http://www.pakistan.tv/videos-immune-response-[90hSVkaOG_w].cfmhttp://www.pakistan.tv/videos-immune-response-[90hSVkaOG_w].cfm http://www.brainpop.com/health/bodysystems/immunesystem/ http://www.brainpop.com/health/personalhealth/boogers/

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