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Question
Biology
Posted 9 months ago
How are light reactions related to dark reactions?
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Answer from Sia
Posted 9 months ago
Answer
Light reactions and dark reactions are interconnected processes in photosynthesis.
Solution
a
Light reactions: These occur in the thylakoid membranes of the chloroplasts where light energy is converted into chemical energy in the form of ATP and NADPH
b
Dark reactions: Also known as the Calvin cycle, these occur in the stroma of the chloroplasts and use the ATP and NADPH produced in the light reactions to fix carbon dioxide into glucose
c
Interdependence: The ATP and NADPH generated in the light reactions are essential for the Calvin cycle to synthesize glucose, while the Calvin cycle regenerates ADP and NADP+ that are reused in the light reactions
Key Concept
Photosynthesis involves two main stages: light reactions and dark reactions (Calvin cycle).
Explanation
Light reactions capture and convert light energy into chemical energy (ATP and NADPH), which are then used in the dark reactions to produce glucose from carbon dioxide.

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