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Ap Bio Lab Report

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After the results from the three experiments, it has been concluded that Vial B contains the living organisms. This is because in each of the experiments, a characteristic of life was tested. Vial B tested positive and proved that it contained the living organisms. The first experiment tested if the it responded to the environment. To test this factor, the vial substances were tested to watch and observe how they respond in hot and cold water. Vial B responded to the environment when we added the hot water and the cold water. It was cohesive and in both tests it was observed how drastic the changes were from the beginning of the experiment to the end. Where in Vial A, it stayed separate for both tests. It never responded to the environment. It was observed that Vial A, the substance stayed separate in both the hot and the cold water. Where Vial B, …show more content…

By changing the temperature of the water the samples are placed in, a conclusion can be made if one of the samples gains mass or develops in the water. Vial B in the second experiment responded to the heated water by gaining 2.3 grams in mass. Vial A did not gain any mass in either temperature of water. In both temperatures sample B reacted and developed with the water while sample A didn't change at all. This proves that the sample in vial B can grow and develop, concluding that vial B has this characteristic of life. The third experiment tested if the samples were made of cells. To test this factor, we put the substances underneath the microscope. By adding methylene blue to one of the two of each substance sample, you could observe if cells were present which would be a sign of life. In the experiment we observed that Vial B had cells and the Vial A did not. Vial B had what looked like hollow circles or like an “o”. Where Vial A, only showed what looking like super zoomed in views of rocks. With these observations, it was assumed that Vial B contained

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