Which of the following statements regarding digestion and absorption of carbohydrates is TRUE?

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Digestible polysaccharides such as starch and glycogen are broken down into the monosaccharides glucose, galactose, and fructose which can be absorbed by the small intestine. However, cellulose, a non-digestible polysaccharide present in plants, cannot be broken down by human digestive enzymes and thus cannot be absorbed. Option A is incorrect because carbohydrate digestion begins in the mouth by the enzyme amylase present in saliva. Option B is incorrect because lactose intolerance occurs due to an insufficiency of lactase enzyme which breaks down lactose into glucose and galactose. Option D is incorrect because sucrose is broken down into glucose and fructose by the enzyme sucrase and is then absorbed. Option E is incorrect because cellulose cannot be easily digested and absorbed by the human GI tract.

Which of the Following Statements Regarding Digestion and Absorption of Carbohydrates