Given a scientific passage and an answer, generate a question for the given answer.
Q: Passage: Figure 7.5 In eukaryotes, oxidative phosphorylation takes place in mitochondria. In prokaryotes, this process takes place in the plasma membrane. (Credit: modification of work by Mariana Ruiz Villareal). Answer: mitochondria
A:
In eukaryotes, oxidative phosphorylation takes place in what?