This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Biochemistry
Ketone bodies not utilised by 
Select and explain. 
A. Brain, B. RBC, C. Hea, D. Skeletal muscle
B: RBC
Answer: B: RBC 
Explanation: Paial oxidation of fatty acids in the liver leads to ketone body production. Ketone bodies are expoed to extrahepatic tissues, where they act as a fuel in prolonged fasting and starvation.