Photosynthesis- Light-Independant Stage 0.0 / 5 ? BiologyPhotosynthesisA2/A-levelOCR Created by: TaraCBeckworthCreated on: 06-12-16 13:46 Where does the light-dependent stage occur? In the stroma 1 of 15 What is the raw material? Carbon dioxide 2 of 15 How does the plant get the CO2? The CO2 diffuses in through the open stomata and then diffuses into the chloroplasts 3 of 15 What is the first stage of the light dependant stage (calvin cycle)? Carboxylation- The carbon is fixed by the CO2 combining with the RuBP 4 of 15 What enzyme is involved in the carboxylation? Rubisco 5 of 15 What is the product of the carboxylation? An unstable carbon intermediate 6 of 15 What is the second stage? The unstable intermediate is broken down to form 2 3-carbon GP molecules (3 phosphate) 7 of 15 What gets produced from the GP? Amino acids and fatty acids 8 of 15 What other 3 carbon molecule are the GP molecules converted to? (stage 3) TP 9 of 15 What molecules are required to convert the GP to TP? ATP and reduced NADP, supplied by the light dependent reaction 10 of 15 What is TP? Triose Phosphate, a 3-carbon carbohydrate and the starting point for the synthesis of many complex biological molecules 11 of 15 What happens to a large amount of the TP produced? It is regenerated back into RuBP 12 of 15 What can TP produce? Glycerol-> lipids, hextose sugars (fructose and glucose, producing sucrose, cellulose, starch) 13 of 15 How many CO2 molecules have to enter the cycle to produce one molecule of glucose and so how many TP molecules are produced? 6 so 6 full turns of the cycle and 12 TP molecules produced, 2 of which are used to make the glucose 14 of 15 How many TP molecules are regenerated to RuBP for every glucose molecule produced? 10 15 of 15
Essay 1: The transfer of substances containing carbon between organisms and between organisms and the environment 0.0 / 5
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