IB Student Fatima Posted May 14, 2012 Report Share Posted May 14, 2012 Hi, I am a new YR12 IB student this year and this is my second IA in Biology. I have formulated my reaearch question but am not sure if it is ok or needs to be edited. Any help or feedback will be appreciated Reply Link to post Share on other sites More sharing options...
Crazy Gemini Posted May 14, 2012 Report Share Posted May 14, 2012 Hi, I am a new YR12 IB student this year and this is my second IA in Biology. I have formulated my reaearch question but am not sure if it is ok or needs to be edited. Any help or feedback will be appreciated What is your question? Reply Link to post Share on other sites More sharing options...
IB Student Fatima Posted May 15, 2012 Author Report Share Posted May 15, 2012 Oops! My question is:Which wavelengths of light out of blue, red, yellow, green and white allow photosynthesis to take place the most efficiently by measuring and comparing the volumes of oxygen gas that are produced because of these different wavelengths. Reply Link to post Share on other sites More sharing options...
Drake Glau Posted May 15, 2012 Report Share Posted May 15, 2012 (edited) In the world of light, "white" is all colors mixed perfectly together so it might not be a good idea to include it. On another note similar, you might want to just stick to the 3 main colors of red blue and green to avoid mixing colors. If you mix the colors you can't tell if its rate is higher because its more blue than red, or maybe more red than blue, stuff like that. 3 colors will be plenty I would think anyway Edit: If you need more variation due to something your teacher says, see if you can control the actual wavelengths of the light and change your IV to the exact wavelengths. That would be cool I would change the wording of efficiency into something about rates. So then your IV and DV turn into wavelength VS rate of photosynthesis VIA rate of oxygen production. It's a good IA though that I wanted to do but never got the chance too Edited May 15, 2012 by Drake Glau Reply Link to post Share on other sites More sharing options...
Crazy Gemini Posted May 15, 2012 Report Share Posted May 15, 2012 In opposition to the previous poster, I think you should include white light, you need a control group of sorts to compare your data from the blue green and red light, to see what the differences are to enable you to see what effect isolating these colours actually has... Reply Link to post Share on other sites More sharing options...
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