Why is the enzyme lactase necessary to digest dairy products?

The enzyme lactase helps digest dairy products through breaking it down into two simple sugars which as glucose and galactose. The body have difficulties in absorbing full lactose molecule thus the need for breaking it down into simpler sugars. This is why lactase is important as it splits the bond that holds the galactose and glucose. 

bacteria could be both, harmful and to us. harmful bacteria could make us sick and probably even by getting the chances of getting a disease, but good bacteria fight it off with your immune system. there is always bacteria everywhere we go. we need to make sure to wash our hands after using the restroom, before eating, after eating, after petting an animal too. so you see, bacteria is everywhere and is harmful or . i hope this . : ) : ) : )