This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Structure and function of protein, Subject name: Biochemistry
[{'content': 'The conversion of optically pure isomer (enantiomer) into a mixture of equal amounts of both dextro and levo forms is called as \nSelect and explain. \nA. Polymerization, B. Stereoisomerization, C. Racemization, D. Fractionation', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Depending on the rotation, molecules are called dextrorotatory (+) (d) or levorotatory (-) (l). Thus D-glucose is dextrorotatory but D-fructose is levorotatory. Equimolecular mixture of optical isomers has no net rotation (racemic mixture) or Racemization Ref: Textbook of Biochemistry for Medical Students, 7E (DM Vasudevan)(2013) Pg no.70 & 71.', 'role': 'assistant'}]