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Question
Choose the correct combinations of labeling the carbohydrate molecule involved in the Calvin cycle.
Choose the correct combinations of labeling the carbohydrate molecule involved in the Calvin cycle.
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Solution
The correct option is C A- RuBP, B- PGA, C- Triose phosphate
The Calvin cycle is a metabolic pathway found in the stroma of the chloroplast in which carbon enters in the form of CO2 and leaves in the form of sugar. The cycle spends ATP as an energy source and consumes NADPH2 as reducing power for adding high energy electrons to make the sugar. In the first phase, carboxylation of RUBP takes place, which leads to the formation of 1,3-bis phosphoglycerate (PGA). PGA then gets reduced to triose phosphate (glyceraldehyde phosphate). Thus, the labelled molecules in the diagram are A- RUBP, B- PGA, C- triose phosphate.
Thus, the correct answer is option D.
The Calvin cycle is a metabolic pathway found in the stroma of the chloroplast in which carbon enters in the form of CO2 and leaves in the form of sugar. The cycle spends ATP as an energy source and consumes NADPH2 as reducing power for adding high energy electrons to make the sugar. In the first phase, carboxylation of RUBP takes place, which leads to the formation of 1,3-bis phosphoglycerate (PGA). PGA then gets reduced to triose phosphate (glyceraldehyde phosphate). Thus, the labelled molecules in the diagram are A- RUBP, B- PGA, C- triose phosphate.
Thus, the correct answer is option D.
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