A part of the Calvin cycle has been removed from the diagram on the right. What occurs at this stage of the cycle?
At this stage of the Calvin cycle, G3P molecules leave the cycle. These molecules are used as the building blocks to create organic molecules such as glucose and sucrose, which provide energy and structure for the plant.
In one to three sentences, describe what happens during the carbon fixation stage of the Calvin cycle.
During the carbon fixation stage, carbon dioxide (CO2) from the atmosphere is attached to a five-carbon sugar called ribulose bisphosphate (RuBP). This reaction is catalyzed by the enzyme rubisco and results in the formation of two molecules of 3-phosphoglycerate (PGA).
In one to three sentences, describe what happens during the reduction stage of the Calvin cycle.
During the reduction stage, ATP and NADPH are used to convert 3-PGA into glyceraldehyde 3-phosphate (G3P). This process involves the transfer of chemical energy and electrons to the carbon molecules, and the resulting G3P can be used to produce sugars like glucose.
In one to three sentences, describe what happens during the regeneration stage of the Calvin cycle.
During the regeneration stage of the Calvin cycle, G3P molecules are converted back into RuBP using energy from ATP. This step is necessary to allow the cycle to continue by providing the starting materials for carbon fixation.
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