Check the statements about light-independent reactions in photosynthesis that are true.
In one to three sentences, describe what happens during the carbon fixation stage of the Calvin cycle.
The enzyme rubisco combines carbon dioxide with the five-carbon compound RuBP, forming an unstable six-carbon compound. This compound splits into two molecules of 3-phosphoglycerate (PGA).
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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.
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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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