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Cellular Respiration Lab Report

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Cellular Respiration Tatiana Garcia Biology 181 Lab 72256 September 27, 2017 This experiment tested the cellular respiration rate of three different beans to investigate whether or not size effects the production of Carbon Dioxide by using a CO2 sensor. Results of this lab suggested that the size of a bean more than likely has little to no relationship to the Carbon Dioxide concentration and this was found through testing three different species/sizes of beans with a Carbon Dioxide sensor. The original hypothesis was not supported which could be because of a possible faulty sensor or even due to the fact that only 9 grams of lima beans were tested instead of 10 grams like the others. Introduction: Cellular Respiration refers to the biochemical pathway by which cells release energy from the comical bonds and provide energy for the essential processes of life. (Enger and Ross., 2003) There are three steps included in the cellular respiration process which are glycolysis, the Krebs cycle, and lastly the electron transport chain. Glycolysis is the breakdown of a glucose molecule in …show more content…

(Engleberg et al., 2001). As seen in Figure 1 and Figure 2, the black beans, which were the smallest, had the highest Carbon Dioxide concentration at the end of the four minutes at 1,066 ppm. The results of this lab could have been altered because of human error. Humans naturally breathe out Carbon Dioxide which could affect the calibration of the Carbon Dioxide sensor when we were inserting the beans in to the chamber. This source of human error could have possibly been the reason as to why there is was a sudden drop in the first ten seconds while running the test for Lima Beans (see Fig. 2). The significance of this experiment was to test what may be a possible factor when it comes to cellular respiration,

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In this experiment we are observing how colder water is associated with the respiration of goldfish. Respiration, also known as breathing, is the process in which the body exchanges gasses and supplies oxygen. Goldfish use their gills to receive oxygen and get rid of carbon dioxide. Oxygen is an essential part to life because it is broken down to create ATP. ATP gives the goldfish energy to carry out it’s everyday goldfish activities.

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For example, in trials one and two of this test the respiration rates were zero. Technically, the rates shouldn’t be at exactly 0 ppm/s because the crickets were alive and therefore respiring, so this information could implicate that the bottle containing the crickets was not completely airtight while the CO2 sensor was reading. However, in trials three, four, and five, the rates also stay within the range of 0 and 0.3 ppm/s, so the inference that is made is that in the lower temperature the crickets will not respire as much as in the higher temperatures. In 35oC, the crickets respired quickly at rates that, when compared to the lower temperature, were on average, much higher. For example, in trial one the crickets respired at 1.12 parts per million which is about one part per million higher than when the crickets were placed in 5oC.

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I will place the seeds into tubes that contain calcium hydroxide, and invert them in to beakers with water right after. Calcium hydroxide will react with carbon dioxide that is produced and remove the gas from the test tube air space. As seeds are respiring they are absorbing oxygen and respiring carbon dioxide, but the carbon dioxide is absorbed by the calcium hydroxide. As a result of these reactions the air in these tubes decreases and the water increases. This shows us a visible indication of occurring

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