This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: nutrition and digestion, Subject name: Biochemistry
[{'content': 'Which of the following is not a micronutrient? \nSelect and explain. \nA. Iodine, B. Iron, C. Glucose, D. Boron', 'role': 'user'}, {'content': 'Answer: C \nExplanation: If the daily requirement is more than 100 mg, they are called major elements or macrominerals. If the requirement of ceain minerals is less than 100 mg/day, they are known as minor elements or microminerals or trace elements, micronutrients. Options A and B are micronutrients. Option D : Boron is still regarded as a possibly essential element with no proved significance. Reference : D M Vasudevan , 6th edition page 411', 'role': 'assistant'}]