Lactose intolerance is caused by a deficiency of:

Question

Quizplus · Accepted Answer

Lactose intolerance is caused by a deficiency of lactase enzyme, which is required to break down lactose into simpler sugars for easy digestion. Without lactase, lactose passes undigested through the digestive system and causes uncomfortable symptoms such as bloating, gas and diarrhea. Elastase is an enzyme that helps in the digestion of proteins while sucrase is an enzyme that helps break down sucrose into glucose and fructose. Lactose itself cannot cause lactose intolerance. Therefore, option A, lactase, is the correct answer.

Lactose Intolerance Is Caused by a Deficiency Of