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Bacteria in our school!
My original question was 'Where In our school does the most bacteria live?' And over the last 3 days we conducted an experiment by swabbing surfaces around our school to put in an incubator at the same temperature as our bodies to see how much bacteria grew. We swabbed 4 surfaces. A basketball, a door handle, the auditorium microphone and the water fountain nozzle. Originally I predicted that the door handle would grow the most bacteria, because so many kids hands touch it everyday. But it was evident that 24 hours after growing, that it was the auditorium mic. I was stunned at how much the mic's bacteria grew compared to everything else. But the more I thought about it, the more it made sense. I mean, your mouth is the dirtiest place in your body, which has been scientifically proven. So the fact that a bunch of kids spit is launched onto it each month and it is never cleaned, it is clear why so much bacteria grew! By the time 48 hours went by there was a colony the size of a quarter that grew. So conclusion of this experiment is that out of the places we swabbed, the microphone in the auditorium carried the most bacteria.
Article posted February 3, 2012 at 12:27 PM •
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Plant cells and animal cells have a lot of things in common like: Cytoplasm, Cytoskeleton, Endoplasmic Reticulum, Golgi Apparatus, Mitochondria, Nucleus, Peroxisomes, Plasma Membranes, Ribosomes. But they also have differences like: plant cells have Cell Walls, Chloroplasts and Vacuole and animals cells don't. Also, animal cells have Centrioles, Flagellum and Lysosomes and plant cells don't.