Lab Report 2: Lab 8—Photosynthesis: Converting Light Energy into Chemical Energy There are two parts to our video. The first part demonstrates photosynthesis, which is the main scientific process underlying all ecosystems, and the substance of most organisms on earth. It is an important process because it makes carbohydrates -- a high energy source. The photosynthetic process converts light energy into chemical energy, and can best be distinguished into two parts -- light-dependent and light-independent reactions. After the 45 minute period of our experiment, we are able to conclude that there was no oxygen produced under the dark color regime, and that the light color regime produced the most oxygen. The second part of the video shows how we are able to understand that in the light-dependent reactions of photosynthesis, chlorophyll absorbs energy at certain wavelengths, and reflects those that it does not absorb; this can be further understood as the reason for the green color of leaves. The most important part of the reaction is that glucose is produced to be used as energy or polymerized into starch. We learned that the light-independent reactions can take place in the dark, but often to so in the presence of light. In terms of the absorption spectrum for chlorophyll in the spinach extract, we were able to see that the wavelengths and absorbance levels increased simultaneously. However, between the set of wavelengths where the absorbance levels could not be read on the spectrometer, we discovered that it was at those points that the green color of chlorophyll was reflected; where as the other colors were absorbed. This reflected color, green, is what we see off of leaves.