What is lactase used for?
A. It is used to make sugar-free milk.
B. It hydrolyses lactose to glucose and fructose.
C. It improves the digestion of milk by some people.
D. It decreases the acidity of the milk.
Lactase is use to digest lactose, which is a sugar found in dairy. the -ase makes it a specific enzyme to digest a specific disaccharide (sugar). I this case, Lactase is digesting Lactose.