Why is photorespiration an inefficient way to produce sugars?
A) Photorespiration produces 7-carbon carbohydrate molecules instead of 6-carbon sugars.
B) The increased production of O2 during photorespiration generates excess dangerous free radicals.
C) Photorespiration only occurs during the night, when the light-dependent reactions are inactive.
D) CO2 is lost instead of being fixed and ATP is required to detoxify the ammonia that is produced.
E) Carbon fixation requires an extra turn of the Calvin-Benson cycle for each molecule of sugar produced.
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