Ter 9 Test What BEST describes the roles of photosystem I and photosystem ll in the process of photosynthesis?
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A. They form ATP as hydrogen ions cross the thylakoid membrane.
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B.
They absorb sunlight and distribute the energy as heat.
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C. They transfer electrons from a series of intermediates to form NADPH.
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D. They absorb sunlight and transfer the energy to electrons.