This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lipid Oxidation and Synthesis, Subject name: Biochemistry
[{'content': 'Role of carnitine in lipid metabolism - \nSelect and explain. \nA. Catalyzation of the cyclization sequence, B. Essential for extracellular transfer of fatty acids, C. Essential for biosynthesis of fatty acids, D. Transfer of activated long chain FFA into mitochondria', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e.. Transfer of activated long chain FFA into mitochondria o Activated long chain fatty acid (acyl CoA) cannot penetrate inner mitochondrial membrane.o Acyl group of acyl CoA is transferred to carnitine, resulting in formation of acylcarnitine.o Acylcarnitine is then transported across the inner mitochondrial membrane into the mitochondrial matrix by translocase.o Once inside the mitochondrion, acyl group of acylcarnitine is transferred back to CoA, resulting in formation of acvl-CoA which undergoes b-oxidation.", 'role': 'assistant'}]