People who are lactose intolerant cannot extract energy from milk because ________.
A) they are missing an enzyme
B) lactose is too big to be digested by the enzymes
C) milk is fermented to a by-product, which cannot be digested
D) they are missing the bacteria that can digest lactose

Question

Quizplus · Accepted Answer

People who are lactose intolerant are missing an enzyme called lactase, which breaks down lactose (a sugar found in milk) into glucose and galactose, so they cannot extract energy from milk.

People Who Are Lactose Intolerant Cannot Extract Energy from Milk