Question

Which of the following statements is false?

a) Those who are lactose intolerant lack the enzyme lactase
b) Most monosaccharides are absorbed before the large intestine
c) Carbohydrate digestion begins in the mouth with ?-amylase
d) Both maltase and ?-amylase break down ?

Answer 1

The false statement is that both maltase and α-amylase break down α; in fact, α-amylase starts the digestion of carbohydrates, while maltase breaks down maltose in the small intestine.

Step-by-step explanation:

The false statement in the provided options is: d) Both maltase and α-amylase break down α. This is incorrect because α-amylase and maltase break down different substrates during the digestion process. α-Amylase, which is present in the mouth and produced by the salivary glands as well as the pancreas, begins the digestion of carbohydrates by breaking down starches into smaller chains called dextrins and maltose. On the other hand, maltase, which is found in the small intestine, specifically breaks down the disaccharide maltose into two glucose molecules. Therefore, it is not accurate to say that both enzymes break down α, as they have distinct functions in carbohydrate digestion.