This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Classification and metabolism of amino acids, Subject name: Biochemistry
[{'content': 'All of the following are true about the stationary phase used in high-pressure liquid chromatography, EXCEPT \nSelect and explain. \nA. Made up of fine paicles, B. Provides high resistance, C. Provides more surface area, D. Provides low resolution', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Stationary phase in HPLC is made up of fine silicone paicles - option a is correct As there are a lot of fine paicles, the surface area is increased and resistance to the mobile phase is increased. That is why we apply high-pressure - option b and c are correct As the surface area is high, the chance interaction between stationary and mobile phase is high - good separation is achieved, i.e. resolution is high, not low - option d is wrong', 'role': 'assistant'}]