This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Enzymes, Subject name: Biochemistry
[{'content': 'Following is true statement about enzymes \nSelect and explain. \nA. In competitive inhibition Vmax unchanged but Km increased, B. In uncompetitive inhibition Km unchanged but Vmax increased, C. In uncompetitive inhibition Km unchanged but Vmax increased, D. In uncompetitive inhibition mixed increase of Vmax and Km value', 'role': 'user'}, {'content': 'Answer: A \nExplanation: In the case of competitive inhibition, the Km is increased in presence of competitive inhibitor. Thus competitive inhibitor apparently increases the Km. In other words, the affinity of the enzyme towards the substrate is apparently decreased in presence of the inhibitor. But Vmax is not changed.Ref: DM VASUDEVAN, page no: 52', 'role': 'assistant'}]