How Does ATP Synthase Obtain the Energy to Produce ATP

question 21

Multiple Choice

How does ATP synthase obtain the energy to produce ATP?

• A) Hydrogen ions flow down a concentration gradient from the thylakoid space to the stroma through ATP synthase, releasing energy that can be used to produce ATP from ADP + P _i.
• B) Water splits, releasing electrons that flow from the stroma to the thylakoid space and attach to the active site of ATP synthase.
• C) Electrons from the reaction site center of photosystem II are funneled to ATP synthase, which uses the energy to produce ATP from ADP + P _i.
• D) Hydrogen ions in the thylakoid space combine with electrons from the stroma at ATP synthase, releasing energy that can be used to produce ATP from ADP + P _i.
• E) A hydrogen ion from NADPH is used by ATP synthase to power the production of ATP from ADP + P _i, and an electron is released, splitting water.

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