Question:
Chloroplasts are disrupted and the stroma separated from the lamella. The isolated stroma will fix CO$_2$, if it is supplied with:
Chloroplasts are disrupted and the stroma separated from the lamella. The isolated stroma will fix CO$_2$, if it is supplied with:
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The Calvin cycle was elucidated using isolated chloroplast stroma, proving light-independent CO$_2$ fixation.
Updated On: July 22, 2025
- ATP and NADPH
- Oxygen
- Light
- Carotenoid
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The Correct Option is A
Solution and Explanation
Calvin cycle requirements:
Stroma contains all enzymes for CO$_2$ fixation
Requires energy (ATP) and reducing power (NADPH)
Light not needed directly (dark reactions)
Oxygen inhibits RuBisCO activity
Carotenoids are light
harvesting pigments
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