Use the Accompanying Figure to Answer the Question(s) Below

question 18

Multiple Choice

Use the accompanying figure to answer the question(s) below.
-As electrons are passed through the system of electron carriers associated with photosystem II, they lose energy. What happens to this energy?

• A) It excites electrons of the reaction center of photosystem I.
• B) It is lost as heat.
• C) It is used to establish and maintain a proton gradient.
• D) It is used to phosphorylate NAD+ to NADPH, the molecule that accepts electrons from photosystem I.

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