Experiment With Different Variables That Effect Photosynthesis Using a Computer Simulation, and Take Measurements Accordingly.

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Photosynthesis - Science Coursework

Task:

To experiment with different variables that effect photosynthesis using a computer simulation, and take measurements accordingly.

Prediction:

I predict that firstly the increased temperature will generate more oxygen, however this will only apply to a certain degree, probably around 35?C to 40?C in my opinion, where I think the equation will be at its optimum heat capacity.

And for the additional experiment, I think that an increased in Carbon dioxide levels will again produce greater amounts of Oxygen. Lastly, a higher light intensity, in my opinion will produce increased levels of Oxygen because as the formula states sunlight is essential for the reaction to take place, therefore it is likely the greater this is the more Oxygen is produced.

Method:

We first decided to find out how the temperature affects the rate of photosynthesis. Using the computer simulation, we tested from 0?C to 50?C, at 5?C intervals. All other variables were set at one certain measure. Take for instance Light Intensity, which was arbitrary at 50 throughout and NaHCO3, which was at 2%. We then let each individual test run for 10 minutes, and then taken the oxygen level produced, measured in mm.
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As a secondary experiment we tested for the effect of light intensity to the rate of photosynthesis. Again we fixed the amount of NaHCO3 to 2% and left the temperature at 20?C for the duration of the experiment. For a second time, we took readings of the amount of Oxygen given out over 10 minutes.

Apparatus:

Analysis:

Results:

See overleaf for the table of results and the graphs from these tables.

Conclusion - See attached graphs, reference Gr. 1 and Gr. 2:

Looking at the first experiments results and Gr. 1, I ...

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