Homeostasis is important to enzymes because in order to function properly, they need to be in prime conditions and keeping homeostasis, a consistent internal environment (right temperature, right pH, right glucose levels in blood, etc). If homeostasis is not kept he enzymes will not be able to work properly. For example, if temperature get too high the enzymes will denature (get destroyed basically) and will be unusable, if temperatures get to low the bonds the enzyme has will get to stiff and substrate won’t get able to bond to it, both slowing enzyme production. There are other examples but basically homeostasis is necessary for consistent and fast enzymes.