AP BIOLOGY

Detailed explanation-1: -The main difference between induced fit and lock and key model is that in the induced fit model, the active site of the enzyme does not completely fit to the substrate whereas in the lock and key model, the active site of the enzyme is the complement of the substrate and hence, it precisely fits to the substrate.

Detailed explanation-2: -Unlike the lock-and-key model, the induced fit model shows that enzymes are rather flexible structures in which the active site continually reshapes by its interactions with the substrate until the time the substrate is completely bound to it.

Detailed explanation-3: -Explanation: The lock and key model states that the active site of an enzyme precisely fits a specific substrate. The induced fit model states that the active site of an enzyme will undergo a conformational change when binding a substrate, to improve the fit.

Detailed explanation-4: -Since the induced fit theory tells that the substrate can actually induce a change in the active site of the enzyme, hence even if the inibitor attaches itself to the enzyme, the substrate can attach to it (by changing the shape of the active site).

Detailed explanation-5: -In addition, the induced fit model is better able to explain how catalysis actually occurs. A conformational change, which would place stress on the bonds within the substrate can explain how bonds would break in order for the products to form. This makes the induced fit model the more widely accepted model of the two.