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    Question

    Which of the following statements accurately describes a key aspect of the light reaction in photosynthesis?

    A The light reaction occurs in the stroma of chloroplasts and involves the conversion of carbon dioxide into glucose. Correct Answer Incorrect Answer
    B During the light reaction, photons are absorbed by the reaction center of photosystem II, leading to the production of ATP and NADPH. Correct Answer Incorrect Answer
    C In the light reaction, carbon fixation takes place through the action of the enzyme rubisco, resulting in the formation of PGA molecules. Correct Answer Incorrect Answer
    D The light reaction is an oxygen-consuming process that generates oxygen gas as a byproduct while releasing energy-rich molecules like glucose. Correct Answer Incorrect Answer

    Solution

    The light reaction is the initial stage of photosynthesis that occurs in the thylakoid membrane of chloroplasts. It involves the absorption of light energy by pigments, particularly chlorophyll, and the conversion of that energy into chemical energy in the form of ATP (adenosine triphosphate) and NADPH (nicotinamide adenine dinucleotide phosphate).

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