Cell Energy Inquiry Investigation - Hour 4 by Jeremy Mohn https://padlet.com/jmohn/qtmqq6i8a14b Group 7 en-us 2016-10-19 01:30:51 UTC 2025-04-10 14:45:15 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Thunder.png Research Question jmohn https://padlet.com/jmohn/qtmqq6i8a14b/wish/131670973 How does light affect the rate of photosynthesis?]]> 2016-10-19 01:30:51 UTC https://padlet.com/jmohn/qtmqq6i8a14b/wish/131670973 Hypothesis/Prediction jmohn https://padlet.com/jmohn/qtmqq6i8a14b/wish/131670974 Hypothesis: 

If we apply more light to the plant, then the photosynthesis rate will rise. 


Prediction: 

If it is true that if we apply more light to the plant then the photosynthesis rate will rise, then when we apply more light the level of carbon dioxide will drop.
]]> 2016-10-19 01:30:51 UTC https://padlet.com/jmohn/qtmqq6i8a14b/wish/131670974 Graph jmohn https://padlet.com/jmohn/qtmqq6i8a14b/wish/131670975 The blue line represents the test with light applied (changes -0.006911ppm/s)
The black line represents the test in the natural light of the room (changes -0.1218 ppm/s)
The green line represents the test with the light removed, or with the box covering the chamber (changes -0.01172 ppm/s)]]> 2016-10-19 01:30:51 UTC https://padlet.com/jmohn/qtmqq6i8a14b/wish/131670975 Conclusion jmohn https://padlet.com/jmohn/qtmqq6i8a14b/wish/131670976 Based on our experiments, we reject our hypothesis. Our graph shows that the rate of photosynthesis was higher when there was no light, or when it was under the natural light of the room. When we added more light, the rate of photosynthesis decreased, and less CO2 was consumed. A possible explanation could be that the light we applied was too intense, so the plant closed its pores. Our main possible source of error was our inability to reset the probe back to its starting point. ]]> 2016-10-19 01:30:51 UTC https://padlet.com/jmohn/qtmqq6i8a14b/wish/131670976 Results jmohn https://padlet.com/jmohn/qtmqq6i8a14b/wish/131670977 All 3 tests had a weird pattern to increase the amount of CO2 at the very beginning of the test, and then begin to drop. We measured the rate of change after the increase of CO2 on all 3 tests. 

The results did not come out exactly as we expected, because adding light decreased the amount of photosynthesis. But, removing light also decreased the rate of photosynthesis compared to the rate of photosynthesis under natural light. The rates of photosynthesis in order from highest CO2 consumption to lowest CO2 consumption is 1) Natural Light, 2) Light Removed, 3) Light applied.]]> 2016-10-19 01:30:51 UTC https://padlet.com/jmohn/qtmqq6i8a14b/wish/131670977 The Effect of Light on Photosynthesis jmohn https://padlet.com/jmohn/qtmqq6i8a14b/wish/131670978 Names: Caden Hughes, William Soper, Logan Cully, Jaelen Matthews]]> 2016-10-19 01:30:51 UTC https://padlet.com/jmohn/qtmqq6i8a14b/wish/131670978 Procedure jmohn https://padlet.com/jmohn/qtmqq6i8a14b/wish/131670979
  • Measure the carbon dioxide level of the room to get a starting point for each test.
  • Put the pea plant leaves into a biochamber under the natural light of the room and measure the carbon dioxide level. Allow 3 minutes to pass before recording results.
  • Reset the probe by fanning it with a notebook and then put it back into the biochamber. Take the biochamber and apply more light using the lightpads. Allow 3 minutes to pass and measure the carbon dioxide level. 
  • Then, reset the probe again and put it back into the biochamber. Cover the biochamber so no light passes through and put the probe back in. Allow about 3 minutes to pass then measure the carbon dioxide level. 
  • Graph the results and compare. Form a conclusion based off of the results.  
    • ]]>     2016-10-19 01:30:51 UTC https://padlet.com/jmohn/qtmqq6i8a14b/wish/131670979