PLANT PHYSIOLOGY
PHOTOSYNTHESIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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true
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false
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Either A or B
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None of the above
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Detailed explanation-1: -Though it is called the “dark reaction", the Calvin cycle does not actually occur in the dark or during night time. This is because the process requires NADPH, which is short-lived and comes from the light-dependent reactions.
Detailed explanation-2: -Electron transfer helps generate NADPH and ATP, which are used in the Calvin cycle. Therefore, the Calvin cycle is more likely to happen during daylight after the light-dependent stage has sufficiently produced NADPH and ATP.
Detailed explanation-3: -The plants shut down the Calvin Cycle in the dark when the levels of ATP and NADPH decline because the Calvin Cycle needs reduced NADP, which is short-lived and occurs from light-dependent reactions.
Detailed explanation-4: -Answer and Explanation: The statement that is false concerning the Calvin-Benson cycle is it D. oxidizes carbons.
Detailed explanation-5: -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.