Answer :
Final answer:
The metabolic intermediate of the light-independent reactions in photosynthesis is PGA (3-phosphoglycerate).
Explanation:
In photosynthesis, the light-independent reactions, also known as the Calvin cycle, occur in the stroma of chloroplasts. One of the metabolic intermediates produced during this process is PGA (3-phosphoglycerate). It is formed as a result of the incorporation of carbon dioxide into a five-carbon molecule called RuBP (ribulose 1,5-bisphosphate). PGA is then converted into other compounds, such as glucose, during subsequent steps of the Calvin cycle.
PGA is produced during the carbon fixation step of the Calvin cycle and is eventually used to generate sugars and other organic molecules in the process of photosynthesis.
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PGA (phosphoglycerate) is a metabolic intermediate of the light-independent reactions in photosynthesis. Therefore, the correct statement is option B.
What is PGA (phosphoglycerate)?
A metabolic intermediate in photosynthesis's light-independent reactions, also known as the Calvin cycle, is PGA (phosphoglycerate). The Rubisco (ribulose-1,5-bisphosphate carboxylase/oxygenase) enzyme is responsible for fixing carbon dioxide into PGA during the Calvin cycle.
After that, PGA is transformed into other compounds like glyceraldehyde-3-phosphate (G3P) and glucose, which can be stored in plant tissues or used as energy.
The Calvin cycle gets its energy and reducing power from the light-dependent reactions in photosynthesis, which produce ATP and NADPH. RuBP (ribulose-1,5-bisphosphate) is the underlying carbon dioxide acceptor atom in the Calvin cycle.
Therefore, PGA (phosphoglycerate) is a metabolic intermediate of the light-independent reactions in photosynthesis.
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