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Petri Dishes Lab Report

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Petri Dishes Lab Report
While doing the experiment, we can’t avoid the bacteria from the air flew in the Petri dishes will be counted as the bacteria exist on the hands. Existing mistakes about controlling bacteria colony was unavoidable. Covered the Petri dishes' cover immediately was a good way to prevent the bacteria colony in the air flew into the Petri dishes. It also made the experiment data more accurate.

The result showed that boys' hand have more bacterial than the girls' hand. The student 12 had the greatest amount of bacteria colony on his hand. The student 7 had the least amount of bacteria colony on her hand. According to the graph, it showed the mainly reason that caused the boys' hand had the greatest amount of bacteria is because they did more extra
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