Which one of the following statements holds true for the induced-fit model?
a) once the enzyme binds to the specific substrate molecule , no structural changes can occur in the active site in the enzyme .
b) once the enzyme binds to the specific substrate molecule , structural changes can occur in the active site to accommodate the product .
c) once the enzyme binds to a specific substrate molecule , subtle structural changes can occur in the active site , which are reverted when the reaction is over

The induced-fit model is an elobaration of lock and key model and it says that
Once the enzyme binds to the specific substrate molecule , structural changes can occur in the active site to accommodate the product
when a  substrate react with a enzyme it causes chemical changes and bond whether lengthen or shorter and change the shape
so i think option B is correct
hope it helps

The return of the wolf to yellowstone national park will probably affect the bird population to some degree, not significantly. while wolves will hunt birds when necessary, they prefer to hunt larger prey. the bird population will most likely only be affected when hunting is scarce for the wolves. birds of prey will also probably not be affected as much as other birds who spend more time on the ground hunting for food as the tend to spend more time in the air or in trees since they do not need to stay on the ground for long due to the nature of the way they hunt.

Ithink its c hope it : )