PHOTOSYNTHESIS
THE CALVIN CYCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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carbon dioxide and energy (ATP and NADPH) are used to make organic compounds
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energy is absorbed from sunlight and converted to chemical energy stored in ATP and NADPH
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Occurs in the thylakoid
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Occurs in the cytoplasm
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Detailed explanation-1: -The reactions of the Calvin cycle add carbon (from carbon dioxide in the atmosphere) to a simple five-carbon molecule called RuBP. These reactions use chemical energy from NADPH and ATP that were produced in the light reactions. The final product of the Calvin cycle is glucose.
Detailed explanation-2: -ATP and NADPH produced by the light reactions are used in the Calvin cycle to reduce carbon dioxide to sugar.
Detailed explanation-3: -The Calvin cycle is the term used for the reactions of photosynthesis that use the energy stored by the light-dependent reactions to form glucose and other carbohydrate molecules (Figure 1). Figure 1 The light-dependent reactions harness energy from the sun to produce ATP and NADPH.
Detailed explanation-4: -Coupling to other metabolic pathways. The reactions of the Calvin cycle are closely coupled to the thylakoid electron transport chain as the energy required to reduce the carbon dioxide is provided by NADPH produced during the light dependent reactions.