Photosynthesis
Lab 8 Section 022
Kaileen Savage
Tanushree Majumber
Introduction
“Photosynthesis is a biochemical process for building carbohydrates using energy from sunlight and carbon dioxide taken from the air”, (Morris, J. (2016) Biology How Life Works. New York, NY.). It is a system that uses plants and specific algae to synthesize molecules from both water and carbon dioxide. The oxygen we breathe and the food we eat is fueled by photosynthesis because it is an energy source. Photosynthesis occurs in eukaryotic and prokaryotic organisms and some examples are humans, trees, and plants. Biological systems use photosynthesis as an energy source. Where there is a source of sunlight, there is a chance
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During the experiment, my partner and I received 0 leaves floating in the 0% concentration which was expected. But we also gathered the data that 0 leaves floated for 0.2% the first time we tried which isn’t expected. The second trial we changed the distance of the light and brought it closer and 4 of our 10 leaves floated in the 15-minute span.
Results
The results of the mean of the concentrations are as followed; 0%, 0.2%, 2.0% and 1.0% which are in organization of longest float time to shortest. The higher the concentration of sodium bicarbonate (carbon source) the quicker the process of photosynthesis occurs. The mean of the concentrations is; 0% is 900, 0.20% is 757.58, 1.0% is 580.004 and 2.0% is 582.54. The standard deviations of the concentrations are; 0% is 0, 0.20% is 190.0045, 1.0% is 247.9306 and 2.0% is 199.979.
Conclusion
Does carbon concentration affect the rate of photosynthesis? The carbon concentration does affect the rate of photosynthesis.
The 0% concentration (water) was the highest average float time at 900 seconds. It was significantly higher than the other concentrations. This is expected to be the lowest amount of photosynthesis because it has 0% of carbon dioxide. It is expected because carbon dioxide is needed for photosynthesis to occur.
The 0.2% concentration of sodium bicarbonate was the second longest average float time at 757.58 seconds. It’s about 150 seconds faster than 0% and 200
Have you ever really wondered how different variables can affect how plants go through photosynthesis? Well, in this experiment, the purpose was to see how various environmental conditions can affect the overall photosynthetic capacity of a specific plant. The factors, light, darkness, cold, and heat were applied to see how the different components would affect the photosynthesis on spinach plants. Each group was given a different factor to test. Out group was given the light factor. The hypothesis for this experiment is that when adding light as a factor, the light will affect the overall plant photosynthesis.
Test tube four contained a snail and was placed in the dark. It was hypothesized that the water would remain yellow after a day.
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The dissolved oxygen levels are much higher in this experiment than in the previous experiment.
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