Answer :
The molecule which is regenerated in the regeneration phase of the Calvin cycle is Ribulose-1,5-bisphosphate. Without the regeneration of this molecule, the Calvin cycle would stop.
The second stage of photosynthesis is known as the Calvin cycle, or the light-independent reactions. The transformation of Carbon dioxide to carbohydrates is called Calvin Cycle or C3 cycle and is named after Melvin Calvin who found it. The plants that go through the Calvin cycle for carbon fixation are called C3 plants.
The Calvin cycle is a progression of reactions that happens in the stoma of chloroplasts in a plant cell. The chemical reactions convert carbon dioxide into glucose with the assistance of ATP and NADPH.
These reactions occur in the stoma, the inward space or fluid-filled region of a chloroplast. The Calvin cycle uses the chemical energy of ATP and reduces the power of NADPH from the light-reliant reactions to produce three-carbon sugars.
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Final answer:
Ribulose bisphosphate (RuBP) is the molecule that is regenerated in the regeneration phase of the Calvin cycle. It is vital for the cycle as it allows the fixation of carbon dioxide into glucose.
Explanation:
In the regeneration phase of the Calvin cycle, the molecule that is regenerated is Ribulose bisphosphate (RuBP). This regeneration is important as it allows the cycle to continue. Without the regeneration of RuBP, the Calvin cycle, which is responsible for the fixation of carbon dioxide into glucose in plants, would stop. The Calvin cycle harnesses energy in the form of ATP and NADPH that are used to produce Glyceraldehyde-3- phosphate (G3P) molecules. These molecules store the energy captured from photosynthesis and this energy is used to regenerate RuBP.
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