AP BIOLOGY

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: -Figure 5.15 The Calvin cycle has three stages. In stage 1, the enzyme RuBisCO incorporates carbon dioxide into an organic molecule. In stage 2, the organic molecule is reduced. In stage 3, RuBP, the molecule that starts the cycle, is regenerated so that the cycle can continue.

Detailed explanation-3: -In Conclusion The Calvin cycle starts with RubisCo-fixation of atmospheric CO2 and assimilation into a five-carbon ribulose-1, 6-bisphosphate (RuBP), followed by a reduction phase, and the regeneration of its carbon-accepting substrate, RuBP.

Detailed explanation-4: -RUBP is a 5-carbon compound that acts as a carbon dioxide acceptor in the Calvin cycle in photosynthesis.

Detailed explanation-5: -Steps in the Calvin Cycle In step one, a carbon molecule from carbon dioxide is attached to a 5-carbon molecule called ribulose biphosphate (RuBP).