Question

How would the lock-and-key model explain that sucrase hydrolyzes sucrose, but not lactose?

Short answer

Sucrose conducts catalyzed since this fits the form of the active site in sucrase, however lactose doesn't quite.

Step-by-step solution

Introduction

According to lock and key theory, a precursor complements the active site's design and makes an enzyme called that facilitates the activity.

Given Information

The substrate will also not be activated if something doesn't flow inside of the catalytic.

Explanation

Sucrose conducts catalyzed since this fits the form of the active site in sucrase, however lactose doesn't quite even though it does not engage in the catalytic site of serum protein.