Asked by paris
A scientist observes that algae exposed to continuous light produce more oxygen than those in darkness. Which model best explains this observation?
Respiration requires light to produce ATP
Photosynthesis requires light to split water and release O₂
Calvin Cycle occurs only in darkness
Light increases glycolysis
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Photosynthesis requires light to split water and release O₂.
Explanation: Oxygen evolution comes from the light-dependent (photolysis) reactions of photosynthesis: photons drive electron excitation and water splitting at photosystem II, producing O₂. In darkness those light reactions cannot occur, so less or no O₂ is produced.
Explanation: Oxygen evolution comes from the light-dependent (photolysis) reactions of photosynthesis: photons drive electron excitation and water splitting at photosystem II, producing O₂. In darkness those light reactions cannot occur, so less or no O₂ is produced.
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