The lock and key model and the induced fit model are two models of enzyme action explaining both the specificity and the catalytic activity of enzymes. following are several statements concerning enzyme and substrate interaction. indicate whether each statement is part of the lock and key model, the induced fit model, or is common to both models. note: if you answer any part of this question incorrectly, a single red x will appear indicating that one or more of the phrases are sorted incorrectly.