FORESTRY
PLANT PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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nothing happens there is no energy
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glucose is synthesized from CO2
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Oxygen is being converted into sugar
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energy is generated in the form of ATP
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Detailed explanation-1: -The key step in the Calvin cycle is the event that reduces CO2. CO2 binds to RuBP in the key process called carbon fixation, forming two-three carbon molecules of phosphoglycerate.
Detailed explanation-2: -The Calvin cycle is part of photosynthesis, which occurs in two stages. In the first stage, chemical reactions use energy from light to produce ATP and NADPH. In the second stage (Calvin cycle or dark reactions), carbon dioxide and water are converted into organic molecules, such as glucose.
Detailed explanation-3: -The Calvin cycle is a light-independent reaction in photosynthesis and takes place in three steps, viz., carbon fixation, reduction and regeneration. For the fixation of six molecules of CO2, six turns of the cycle are required. Six turns of the Calvin cycle results in the synthesis of one molecule of glucose.
Detailed explanation-4: -Six “turns” of the Calvin cycle use chemical energy from ATP to combine six carbon atoms from six CO2 molecules with 12 “hot hydrogens” from NADPH. The result is one molecule of glucose, C6H12O6.