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: Biochemistry
[{'content': 'In synthesis of fatty acids, energy is supplied by: \nSelect and explain. \nA. NAD, B. NADPH, C. FAD, D. GTP', 'role': 'user'}, {'content': 'Answer: B \nExplanation: NADPH is involved in various reductive biosynthesis. NADPH is generated in HMP shunt pathway. In fattyacid synthesis each cycle of fattyacid synthesis requires 2 molecules of NADPH.', 'role': 'assistant'}]