Protons (H⁺)accumulate in the Thylakoid Space During Electron Transport Between

question 44

Multiple Choice

Protons (H⁺) accumulate in the thylakoid space during electron transport between photosystems II and I.Which of the following describes what will happen to these protons next?

• A)The protons will reenter the electron transport chain and be used to generate water.
• B)The protons will be used to oxidize NADPH to NADH,generating ATP in the process.
• C)The protons will diffuse out of the lipid layer surrounding the thylakoid and exit the plant during gas exchange.
• D)The protons will raise the pH of the thylakoid space until it becomes alkaline at which point the protons are pumped out of the thylakoid,generating ATP.
• E)The protons will move from the thylakoid space to the stroma through an ATP synthase complex that generates ATP.

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