Koshland proposed that the active site of an enzyme is flexible and adjusts its conformation upon substrate binding. This theory is the:
Q1. Koshland proposed that the active site of an enzyme is flexible and adjusts its conformation upon substrate binding. This theory is the:
Answer: Induced fit model
Explanation: The induced fit model suggests the enzyme's active site changes shape to fit the substrate. Lock and key is tempting but implies rigidity.