biology gcse
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Transcript of biology gcse
limiting factors the rate of photosynthesis can be affected by three main factors
light intensity temperature carbon dioxide concentration
light the more bright / plentiful the light, the higher the rate of photosynthesis. In low light photosynthesis stops
temperature temp. affects all chemical reactions as temperature rises so does the rate of photosynthesis until the enzymes that control photosynthesis denature, at 40 50 ˚C
carbon dioxide concentration CO2 is used in photosynthesis in order to produce glucose + oxygen (and energy). it is also produced by the plant when respiring, CO2 levels tend to rise at night as the plant does not photosynthesise. It is used up in the morning when the sun is up