Nature of photosynthesis: Which description best characterizes photosynthesis? Consider energy flow and metabolic type; mention redox as context. Choose the correct statement.
General Knowledge
Biology
Difficulty: Easy
Choose an option
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AAn anabolic, endergonic (light-driven) process that reduces CO<sub>2</sub> to carbohydrates in chloroplasts
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BA catabolic, exergonic breakdown of glucose to release energy
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CA purely physical process with no redox changes
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DAn anaerobic fermentation that produces ethanol or lactate
Answer
Correct Answer: An anabolic, endergonic (light-driven) process that reduces CO<sub>2</sub> to carbohydrates in chloroplasts
Explanation
Concept / ApproachPhotosynthesis uses light energy (endergonic) to reduce CO2 to sugars, building complex molecules (anabolism) while oxidizing water and releasing O2.
ContrastRespiration is catabolic/exergonic; fermentation is anaerobic metabolism, not photosynthesis.
Final AnswerAn anabolic, endergonic, chloroplast-based process.