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Photosynthesis Lab

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Photosynthesis Lab
An Experiment to Test the Effect of Temperature on the Rate of Photosynthesis in Green Algae

Background Photosynthesis is an amazing process where plants are able to create their own food as well as oxygen using sunlight, carbon dioxide (co2), and water. The part of the plant responsible for photosynthesis is the enzymes in the chlorophyll (structures that carry out photosynthesis located in leaves). Photosynthesis is the process of creating glucose. Water + Carbon Dioxide + Sunlight = Glucose + Oxygen. There are three main factors that can influence the rate of photosynthesis-- temperature, carbon dioxide levels and light. If one of these factors is not present or in insufficient quantities, photosynthesis cannot occur.
This experiment
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The graph displays this conclusion as each temperature did increase over time. The data suggests that the hotter temperatures yielded the best and highest rate of photosynthesis. The hot 55C test tube had the highest rate of photosynthesis. This means that the higher the light absorption rate is, the higher the rate of photosynthesis. The data shows that photosynthesis is most successful at warmer temperatures than cold. The mean absorption rate for the coldest temperature (5C) was 0.204, 0.228, and 0.228 nanometers, while the mean absorption rate for the hottest temperature were 0.34, 0.394, and 0.472 nanometers. The means for the hotter temperature were considerably higher than of any other temperature. This leads to the conclusion that as temperature increases, so does the rate of …show more content…
Temperature, light, and carbon dioxide are all variables that affect the rate of photosynthesis. Temperature was tested through the experiment. The scientific concept explains that higher temperatures produce a higher rate of photosynthesis. This conclusion was supported by the data found because the higher temperatures had a higher rate of photosynthesis. In most chemical reactions, the reaction rate increases with temperature. If temperature is cold (between 0 and 10 C), the enzymes responsible for photosynthesis move to slowly to meat the substrate and will be too cold for a reaction to occur. In medium temperatures (10 to 20C), the enzymes responsible for photosynthesis are functioning at their optimal level. This means that the rate of photosynthesis is high. At high temperatures (usually above 30C), enzyme function begins to slow down and at 40C, the enzyme denatures and no longer functions. The data from this experiment support the concept. However, the enzyme did not denature at the 45C and 55C temperatures. This could be due to external factors such as the fact that the algae was encapsulated in beads as well as in a solution in a test tube, therefore the algae might never have reached

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