This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
Axonemes are associated with: 
Select and explain. 
A. Mitochondria, B. Ribosome, C. Peroxisome, D. Cilia
D: Cilia
Answer: D: Cilia 
Explanation: Within the cilium there is an axoneme that comprises a unique arrangement of nine outer microtubule doublets and two inner microtubules ("9+2" arrangement). Ref: Ganong's Review of Medical Physiology 23rd edition, Chapter 2.