Answer :
During carbon fixation in the Calvin cycle, the compound produced is 3-phosphoglycerate (PGA). Here's a step-by-step explanation of how this process works:
1. Carbon Dioxide Uptake: Carbon fixation begins with the uptake of carbon dioxide (CO2) from the atmosphere.
2. Enzyme Involvement: The enzyme ribulose-1,5-bisphosphate carboxylase/oxygenase, commonly known as RuBisCO, plays a key role in catalyzing the first major step of the cycle.
3. Reaction with RuBP: RuBisCO facilitates the reaction between CO2 and ribulose bisphosphate (RuBP), which is a 5-carbon sugar with two phosphate groups.
4. Formation of Intermediate: This reaction results in an unstable 6-carbon intermediate, which immediately splits to form two molecules of 3-phosphoglycerate (PGA).
Therefore, the compound produced during the carbon fixation phase of the Calvin cycle is PGA, making it the correct answer to the question.
1. Carbon Dioxide Uptake: Carbon fixation begins with the uptake of carbon dioxide (CO2) from the atmosphere.
2. Enzyme Involvement: The enzyme ribulose-1,5-bisphosphate carboxylase/oxygenase, commonly known as RuBisCO, plays a key role in catalyzing the first major step of the cycle.
3. Reaction with RuBP: RuBisCO facilitates the reaction between CO2 and ribulose bisphosphate (RuBP), which is a 5-carbon sugar with two phosphate groups.
4. Formation of Intermediate: This reaction results in an unstable 6-carbon intermediate, which immediately splits to form two molecules of 3-phosphoglycerate (PGA).
Therefore, the compound produced during the carbon fixation phase of the Calvin cycle is PGA, making it the correct answer to the question.