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: Surgery
[{'content': 'The main component of hyperlipidemia constituting a major risk factor for atherosclerosis is- \nSelect and explain. \nA. High densely lipoprotein (HDL) cholesterol, B. Intermediate densely lipoprotein (IDL) cholesterol, C. . Low densely lipoprotein (LDL) cholesterol, D. Very low density lipoprotein (VLDL) cholesterol', 'role': 'user'}, {'content': "Answer: C \nExplanation: Sodium fluoride (Ref: Satyanarayana- 1st Ed/Pg 255) * In glycolysis, (i.e. the pathway in which, glucose is utilized to form energy), 'Enolase' is an enzyme which conves 2- phosphoglycerate to a high energy compound phosphoenolpyruvate. * This enzyme requires Mg++ & Mn++ & is inhibited by fluoride. * For blood glucose estimation, fluoride is added to the blood to prevent glycolysis by cells, so that the blood glucose is correctly estimated.", 'role': 'assistant'}]