This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory chain, Subject name: Biochemistry
[{'content': 'Transpo of fatty acids through mitochondrial membrane is by \nSelect and explain. \nA. Active transpo, B. Facilitated transpo, C. Diffusion, D. Lipases', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Fatty acids are activated in the cytoplasm, but the beta-oxidation is in mitochondria. So transpo of fatty acids through the mitochondrial membrane is essential. The long chain fatty acyl CoA cannot pass through the inner mitochondrial membrane. Therefore a transpoer, carnitine is involved in transfer of fatty acids. Carnitine is beta-hydroxygamma-trimethyl ammonium butyrate, (CH3)3-N+-CH2-CHOH-CH2-COOH. It is synthesized from lysine and methionine in liver and kidney.Ref: MN Chatterjea Textbook of Medical Biochemistry, 6th edition, page no: 130', 'role': 'assistant'}]