Answer :
During the process of carbon fixation, which is part of the Calvin Cycle in photosynthesis, carbon dioxide (CO2) from the atmosphere is converted into an organic form. This is the first step in transforming CO2 into glucose.
Here's how carbon fixation generally works:
1. Carbon Dioxide Input: Carbon dioxide enters the plant leaves through tiny openings called stomata.
2. RuBP Carboxylation: The enzyme RuBisCO catalyzes the reaction between carbon dioxide and a 5-carbon sugar molecule called ribulose bisphosphate (RuBP).
3. Formation of 3-Phosphoglycerate (PGA): The reaction results in the formation of a 6-carbon intermediate which is unstable and quickly splits into two molecules of 3-phosphoglycerate (PGA), a 3-carbon compound.
Thus, during the carbon fixation phase of the Calvin Cycle, the compound produced directly is 3-phosphoglycerate (PGA). This molecule will then undergo further reactions in the cycle to eventually form glucose and other sugars that the plant can use for energy.
Here's how carbon fixation generally works:
1. Carbon Dioxide Input: Carbon dioxide enters the plant leaves through tiny openings called stomata.
2. RuBP Carboxylation: The enzyme RuBisCO catalyzes the reaction between carbon dioxide and a 5-carbon sugar molecule called ribulose bisphosphate (RuBP).
3. Formation of 3-Phosphoglycerate (PGA): The reaction results in the formation of a 6-carbon intermediate which is unstable and quickly splits into two molecules of 3-phosphoglycerate (PGA), a 3-carbon compound.
Thus, during the carbon fixation phase of the Calvin Cycle, the compound produced directly is 3-phosphoglycerate (PGA). This molecule will then undergo further reactions in the cycle to eventually form glucose and other sugars that the plant can use for energy.