This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolism of carbohydrate, Subject name: Biochemistry
[{'content': 'Lactate is formed in all except \nSelect and explain. \nA. RBC, B. Lens, C. Brain, D. Testis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Anaerobic glycolysis does not occur in the brainTherefore lactate is not formed in the brainMost tissues have at least some requirement for glucose. In the brain, the requirement is substantial, and even in prolonged fasting, the brain can meet no more than about 20% of its energy needs from ketone bodies.Ref: Harper&;s biochemistry; 30th edition; page no: 168', 'role': 'assistant'}]