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': 'Which of the following minerals potentiates the action of insulin? \nSelect and explain. \nA. Molybdenum, B. Chromium, C. Manganese, D. Selenium', 'role': 'user'}, {'content': "Answer: B \nExplanation: The total human body contains about 6 mg chromium. The Chromium content of blood is about 20 Mg/dl. Cr performs several biochemical functions such as\xa0\nIn association with insulin, Cr promotes the utilization of glucose.\xa0\nCr is a component of a protein namely chromodulin which facilitates the binding of insulin to cell receptor sites.\nCr lowers the total serum cholesterol level.\nlt is involved in lipoprotein metabolism.\nCr decreases serum low density lipoproteins (LDL) and increases high density lipoproteins (HDL) and, thus, promotes health.\nlt is believed that Cr participates in the transport of amino acids into the cells (heart and liver).\nIt is estimated that an adult man consumes about 10 to 100 mg/day.\xa0\nThe good sources of Cr include brewer's yeast, grains/ cereals/ cheese and meat.\nChromium deficiency causes disturbances in carbohydrate, lipid and protein metabolisms.\nExcessive intake of Cr results in toxicity, leading to liver and kidney damage.\n\nKey Concept:\nChromium in the form of chromodulin facilitates the binding of insulin to cell receptor sites.\nRef : Textbook of Biochemistry, Satyanarayana", 'role': 'assistant'}]