This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General, Subject name: Physiology
[{'content': 'Energy production enzymes are located in: \nSelect and explain. \nA. Rough endoplasmic reticulum, B. Ribosomes, C. Golgi apparatus, D. Mitochondria', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. (d) Mitochondria(Ref: Ganong, 25th ed/p.36)Mitochondria is involved in the synthesis of energy-rich compound ATP by oxidative phosphorylationAlso called as "powerhouse of the cell"', 'role': 'assistant'}]