Cell Energy Inquiry Investigation - Hour 4 by Jeremy Mohn https://padlet.com/jmohn/17w8ikj76wh6 Group 5 en-us 2016-10-19 01:29:49 UTC 2017-03-15 10:10:57 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Thunder.png Research Question jmohn https://padlet.com/jmohn/17w8ikj76wh6/wish/131670814 How does light affect the rate of photosynthesis?]]> 2016-10-19 01:29:49 UTC https://padlet.com/jmohn/17w8ikj76wh6/wish/131670814 Hypothesis/Prediction jmohn https://padlet.com/jmohn/17w8ikj76wh6/wish/131670815 Hypothesis: 

Photosynthesis can not occur without light.

Prediction: 

If photosynthesis cannot happen without light, then the levels of CO2 produced would go up in darker conditions.
]]> 2016-10-19 01:29:49 UTC https://padlet.com/jmohn/17w8ikj76wh6/wish/131670815 Graph jmohn https://padlet.com/jmohn/17w8ikj76wh6/wish/131670816


    • ]]>     2016-10-19 01:29:49 UTC https://padlet.com/jmohn/17w8ikj76wh6/wish/131670816     Conclusion jmohn https://padlet.com/jmohn/17w8ikj76wh6/wish/131670817 We are inclusive about our claim that states if photosynthesis can't occur without light, then the CO2 levels will go up in darker conditions. Our data shows that the pea plant produced an average of 0.68 ppm/s of carbon dioxide under normal light conditions, as expected. This data proves our hypothesis in comparison to CO2 levels produced under bright lights, which produced a steady average of 0.02 ppm/s of CO2. However, when placed in darkness, our pea plant produced an average of -0.06 ppm/s of carbon dioxide, throwing our hypothesis off drastically. Because of this data, it is shown that darker levels of light may result in lower production of carbon dioxide. We remain inconclusive based upon our knowledge of cellular respiration and our first two trials. Some possible sources of error that could have taken place during our experiment are: inaccuracies with the probes' function, the light levels that may have been inconsistent, and the pea leaves may have not fully adjusted from the previous experiments.]]> 2016-10-19 01:29:49 UTC https://padlet.com/jmohn/17w8ikj76wh6/wish/131670817 Results jmohn https://padlet.com/jmohn/17w8ikj76wh6/wish/131670818 Exposed to high levels of light, the pea plant produced an average of 380 ppm of carbon dioxide, staying at a relatively even production rate. Exposed to normal amounts of light, the pea plant produced an average of 430 ppm of carbon dioxide, but did not keep an even production rate. Finally, exposed to darkness, the pea plant produced an average of 315 ppm of carbon dioxide, and kept a relatively consistent production rate.]]> 2016-10-19 01:29:49 UTC https://padlet.com/jmohn/17w8ikj76wh6/wish/131670818 Measuring CO2 levels in pea leaves when they are in different levels of light jmohn https://padlet.com/jmohn/17w8ikj76wh6/wish/131670819 Names: Rafael B, Olivia B, Ella M, Mary W]]> 2016-10-19 01:29:49 UTC https://padlet.com/jmohn/17w8ikj76wh6/wish/131670819 Procedure jmohn https://padlet.com/jmohn/17w8ikj76wh6/wish/131670820
  • Place a pea leaf in one container
  • Place the container under a bright light
  • Measure the levels of CO2 the pea leaf produces every 5 seconds for 5 min.
  • Calculate the average CO2 amounts produced
  • Repeat steps 1-4 with the container in normal light
  • Repeat steps 1-4 with the container in darkness
  • Analyze the results to make a graph and accept or reject hypothesis
    • ]]>     2016-10-19 01:29:49 UTC https://padlet.com/jmohn/17w8ikj76wh6/wish/131670820