How do an enzyme and its substrate fit together?
A)The enzyme breaks down as product is released
B)The whole enzyme is a key that fits into the substrate that is a lock forming a new molecule product
C)Any active site is permanently changed when it interacts with the substrate
D)As the substrate binds to the enzyme,the shape of the active site changes to accommodate the reaction

Question

Quizplus · Accepted Answer

The active site of an enzyme is specific to the shape of its substrate. As the substrate binds to the enzyme, the shape of the active site adjusts and changes to accommodate the reaction, forming an enzyme-substrate complex. This ensures that the reaction proceeds efficiently and in the correct direction, ultimately leading to the formation of a new molecule product. Option A is incorrect as enzymes do not break down during the reaction. Option B is incorrect as enzymes and substrates do not physically combine to form a new molecule. Option C is incorrect as the interaction between the enzyme and substrate is reversible and the active site can return to its original shape after the reaction.

How Do an Enzyme and Its Substrate Fit Together