Plants oxidize sugar in chloroplasts during the day without production of energy. This process is called:
Correct answer: A. Photorespiration
- A. Photorespiration
- B. Oxidative phosphorylation
- C. Non-cyclic photophosphorylation
- D. Cyclic oxidative phosphorylation
Explanation
The process you're describing is called photorespiration. During photorespiration, plants take up oxygen and release carbon dioxide, which occurs in chloroplasts when the enzyme RuBisCO reacts with oxygen instead of carbon dioxide. This process can lead to the oxidation of sugar, but it does not produce energy in the way that cellular respiration does.
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About Bioenergetics
Cellular respiration explains how cells release energy from glucose through glycolysis, the link reaction, Krebs cycle and electron transport chain. It includes ATP production, substrate-level and oxidative phosphorylation, aerobic versus anaerobic respiration, and the roles of mitochondria, oxygen and fermentation in energy transfer.
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