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
Non-shivering thermogenesis is mediated bya) α1 receptorb) β2 receptorc) β3 receptord) UCP-2e) UCP-1 
Select and explain. 
A. a, B. ce, C. ac, D. ae
B: ce
Answer: B: ce 
Explanation: Brown fat is generally where the non-shivering thermogenesis occur. UCP-1 & β3 receptors are involved in the process.