PHOTOSYNTHESIS
THE CALVIN CYCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Detailed explanation-1: -A G3P molecule contains three fixed carbon atoms, so it takes two G3Ps to build a six-carbon glucose molecule.
Detailed explanation-2: -PGA is a 3 carbon compound. ATP and NADPH react with PGA to form PGAL. PGAL is a 3 carbon compound. Two PGAL combine to form a glucose.
Detailed explanation-3: -24 ATP, 36 NADPH, 12 Calvin cycles.
Detailed explanation-4: -After three cycles, a three-carbon molecule of G3P leaves the cycle to become part of a carbohydrate molecule. The remaining G3P molecules stay in the cycle to be regenerated into RuBP, which is then ready to react with more CO2. Photosynthesis forms an energy cycle with the process of cellular respiration.
Detailed explanation-5: -Every three turns of Calvin cycle, there is net gain of one PGAL molecule; five PGAL regenerate threemolecules of RuBP.