Why Does an Electrochemical Potential Build Up in Mitochondria, but Not

question 9

Multiple Choice

Why does an electrochemical potential build up in mitochondria, but not in chloroplasts?

• A)Proton movement into the thylakoid lumen is neutralized by the movement of other ions.
• B)Proton movement into the intercristal space is neutralized by the movement of other ions.
• C)Proton movement into the cristae lumen is neutralized by the movement of other ions.
• D)The protons in chloroplasts are immediately joined to electrons.
• E)The protons in mitochondria are immediately joined to electrons.

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