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Yeast Respiration Lab Report

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Ryan, Drew, Jackson IBC (E) Ms. Vatcher February 6, 2023 Yeast Fermentation Lab Report Abstract: In this lab, we used a CO2 probe to measure the amount of fermentation occurring in yeast at different temperatures. We wanted to see if the temperature would affect the rates of cellular respiration. To collect our data, we heated water to different temperatures, placed our yeast inside a container with the CO2 probe, and then submerged the container in the water. We collected our results using Vernier Graphical Analysis. Previously knowing that when temperature increases, energy also increases, so we predicted that the rate of cellular respiration would be higher when the temperature was higher. That would mean that more CO2 would be released. …show more content…

Before conducting this experiment, it is critical to understand what cellular respiration is and what it does. Cellular respiration is a process that turns sugars, like glucose, into the energy that we call ATP. ATP is the energy used in our body to complete other processes like polymer synthesis and muscle contraction. This process occurs in the cells of an organism. During the procedure, oxygen is taken in, glucose is broken down, CO2 is released, and ATP and H2O are produced. When oxygen is present in the situation, it is called aerobic …show more content…

On the contrary, the class's data shows the exact same theory until thirty-three degrees celsius, and the rate of cellular respiration drops compared to the rest. This most likely was due to an outlier in the class's data, resulting in the average cellular respiration rate dropping. Ultimately, the higher the temperature, the higher the rate of cellular respiration. Figure Legend: This graph shows Ginger and Asher's results versus the class's average results on the effect of glucose molarity on the rate of cellular respiration. The blue bars represent Ginger and Asher's data, and the red bars represent the class's data. Ginger and Asher's data consistently decreases the cellular respiration rate when the glucose molarity is also decreased. Like our data versus the class's data, with the temperature being the independent variable, Ginger and Asher's data consistently decreases, whereas the class's data is all over the place, rising and dropping constantly. Throughout the class's data, there appears to be numerous outliers, resulting in the data obtaining significant variability. Overall, the lower the glucose molarity, the lower the rate of cellular

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