The energy used to produce ATP in the light reactions of photosynthesis comes from
A. splitting water
B. movement of H+ through a membrane
C. the oxidation of sugar molecules
D. carbon fixation
E. fluorescence
Answer (2)
The energy used to produce ATP in the light reactions of photosynthesis primarily comes from the movement of hydrogen ions (H+) through a membrane via chemiosmosis. Other options like water splitting and carbon fixation are related processes but do not directly produce ATP. The electron transport chain is crucial for this energy transfer. ;
The energy used to produce ATP in the light reactions of photosynthesis primarily comes from the movement of hydrogen ions (H+) through a membrane during chemiosmosis. This process occurs in the chloroplasts as part of the light reactions when light energy is converted into chemical energy stored in ATP. Therefore, the correct answer is B. movement of H+ through a membrane.
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