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SARSEF Virtual Fair

6-APT20

Murdering Germs in the Name of Science

Applied Technology
Maya Vazquez

Grade:
6
Teacher:
Sharon Sapp

Germs (pathogens) can make humans sick, such as viruses, bacteria, parasites, and fungi. Disinfecting frequently touched surfaces and objects kills germs so that people don’t get sick. This is especially important in hospitals and in locations where people with an increased risk of infection are, since they can become even more sick. Disinfectants are used to clean surfaces and kill bacteria and viruses that can cause illness, and are a good way to prevent infections. They work in different ways: destroying the cell membrane or destroying the protein envelope, however they don’t kill every single microbe. Four solutions (hospital grade disinfectant, disinfecting wipes, water & vinegar, water) were tested to determine which would remove more pathogens from a hard surface.


Project presentation

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Lab journal excerpts

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12 thoughts on “Murdering Germs in the Name of Science”

  2. This is such an important information that should be shared witl many people as possible.

  5. I think this is good presentation about how different types of cleaners can really be effective or not in killing germs, bacteria and viruses. Love the fact the water and vinegar are very effective closed to the high grade hospital cleaner.

  8. I didn’t realize that germs were killed either through the membrane OR the protein envelope. What an interesting project!

  11. You designed a meaningful and real-world investigation comparing different cleaning solutions using an ATP meter, which is an advanced scientific tool. I was impressed by your clear procedure, your detailed calculations, and your thoughtful discussion of unexpected results. Your recognition of equipment limitations shows strong scientific thinking. Excellent work exploring science that directly impacts everyday health and safety!

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