This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Organelles, Subject name: Biochemistry
Mitochondria are involved in all of the following EXCEPT: 
Select and explain. 
A. ATP production, B. Apoptosis, C. Tri-carboxylic acid cycle, D. Cholesterol synthesis
D: Cholesterol synthesis
Answer: D: Cholesterol synthesis 
Explanation: The biochemical processes taking place in mitochondria are all catabolic pathways and vital pathways i.e. TCA and ETC Replication, Transcription and Translation for mitochondrial DNA Apoptosis Cholesterol synthesis is anabolic pathway, so it occurs in cytoplasm (option 4)