Question

select the correct statement regarding photosynthesis. multiple choice light - independent reactions produce atp. light - independent reactions require the action of photosynthetic pigments. light - dependent reactions produce glucose. light - dependent reactions are catabolic.

Explanation:

1. Light - independent reactions (Calvin cycle) use ATP and NADPH from light - dependent reactions to fix carbon and produce glucose, not produce ATP.
2. Light - independent reactions do not require the action of photosynthetic pigments directly as they are not light - driven.
3. Light - dependent reactions produce ATP, NADPH and oxygen, not glucose. Glucose is produced in light - independent reactions.
4. Light - dependent reactions involve the synthesis of ATP and NADPH from ADP, Pi and NADP+ respectively, which are anabolic reactions. However, the splitting of water is a catabolic process. But overall, light - dependent reactions are mainly anabolic as they build energy - rich molecules for the Calvin cycle. None of the above statements are completely correct based on typical photosynthesis knowledge. But if we have to choose the least wrong one, light - dependent reactions have catabolic aspects (water - splitting).

Answer:

Light - dependent reactions are catabolic.