Question

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. Indicate whether cach statement is part of the lock and key model, the induced fit model, or is common to both models. Lock and key model Induced fit model Common to both models

Answer 1

Solution:

A) Lock and key model:

The enzyme active site has a rigid structure complementary to that of substrate.

B) Induced-fit model:

The enzyme conformation changes when it binds the substrate so that the active sites fits the substrate.

The other two statements are common for both lock-key and induced-fit models. (option 1 and 2)