Although bacteria are often seen as something that is bad for you, it can also be good. In fact, it is in your stomach; it’s practically everywhere. To test the ubiquity of bacteria, my class and I conducted an experiment. We sampled random surfaces like ears, mouths, cell phones, soil, shoe, desk, bathroom door handles, and as our constant variable we left one side of our TSA plate blank. This should tell us whether or not our hypothesis is correct. My hypothesis was, “bacteria is found in every unclean place.” I thought I would find a lot of colonies on the bathroom handles, but instead we found zero. With this new found data, I made an assumption that majority of the students washed their hand before leaving the restroom. This could
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Then, put it in a room with a temperature of 37 Celsius, that is 98.6 Fahrenheit, for about 24 hours. The next day you will see little dots and those are colonies of bacteria. Your results may vary. This is the procedure my class and I underwent to test the ubiquity of bacteria. The experimental design consists of three variables, the independent variable, the constant variable, and the dependent variable. The samples were our independent variable, like the shoe or the ear. We measured the difference between the unclean and clean side with our dependent variable which ranged from 0-150. Our constant was the side left blank, which had a total of zero. These are referred to as parts of an experiment. The surface of the ear we sampled contained more bacteria than any other surface. It contained about 150 colonies of bacteria, seen in figure 2.1. Why is the so? I have a hypothesis that states,” When you are in the shower, your upper part of your ear shields the interior resulting in an improper washing.” I would also like to say that this was not my ear, but instead one of my fellow classmate’s. One way to test this hypothesis is by placing a piece of toilet paper in your ear while you take a shower. If the toilet paper is still dry, then the hypothesis is most likely correct. However, this experiment still needs …show more content…
We naturally assumed that there were many colonies of bacteria in soil. After all, dirt is dirty. In total, there was 85 colonies of bacteria found in the soil. See figure 2.1. The experiment my class conducted showed that dirt contains a lot of bacteria. In the shoe sample we found 75 colonies. This is probably due to the fact that shoes have a direct connection to the ground. A good experiment would be to tape a napkin to the bottom of your shoe and walk around. Your napkin will be really dirty. My cell phone had 10 colonies of bacteria and personally, I find this very disturbing. The desk only had 2 colonies of bacteria. The reason for the cleanliness is probably because each class cleans it after their done. The most surprising of these results is that of the restroom’s door handle. The handle had no bacteria on it. Why is it so clean? The answer can only be answered by another experiment. However, I have a hypothesis that students wash their hands before leaving the bathroom. My professor believes it is because the cleaning crew are excellent cleaners. My professor also mentioned that urine is a very clean substance and the cleaners use disinfect spray. His assumptions are probably correct because he has presented facts and logical
Then, put it in a room with a temperature of 37 Celsius, that is 98.6 Fahrenheit, for about 24 hours. The next day you will see little dots and those are colonies of bacteria. Your results may vary. This is the procedure my class and I underwent to test the ubiquity of bacteria. The experimental design consists of three variables, the independent variable, the constant variable, and the dependent variable. The samples were our independent variable, like the shoe or the ear. We measured the difference between the unclean and clean side with our dependent variable which ranged from 0-150. Our constant was the side left blank, which had a total of zero. These are referred to as parts of an experiment. The surface of the ear we sampled contained more bacteria than any other surface. It contained about 150 colonies of bacteria, seen in figure 2.1. Why is the so? I have a hypothesis that states,” When you are in the shower, your upper part of your ear shields the interior resulting in an improper washing.” I would also like to say that this was not my ear, but instead one of my fellow classmate’s. One way to test this hypothesis is by placing a piece of toilet paper in your ear while you take a shower. If the toilet paper is still dry, then the hypothesis is most likely correct. However, this experiment still needs …show more content…
We naturally assumed that there were many colonies of bacteria in soil. After all, dirt is dirty. In total, there was 85 colonies of bacteria found in the soil. See figure 2.1. The experiment my class conducted showed that dirt contains a lot of bacteria. In the shoe sample we found 75 colonies. This is probably due to the fact that shoes have a direct connection to the ground. A good experiment would be to tape a napkin to the bottom of your shoe and walk around. Your napkin will be really dirty. My cell phone had 10 colonies of bacteria and personally, I find this very disturbing. The desk only had 2 colonies of bacteria. The reason for the cleanliness is probably because each class cleans it after their done. The most surprising of these results is that of the restroom’s door handle. The handle had no bacteria on it. Why is it so clean? The answer can only be answered by another experiment. However, I have a hypothesis that students wash their hands before leaving the bathroom. My professor believes it is because the cleaning crew are excellent cleaners. My professor also mentioned that urine is a very clean substance and the cleaners use disinfect spray. His assumptions are probably correct because he has presented facts and logical