Digestion of a carbohydrate results in large amounts of the monosaccharides glucose and galactose.This carbohydrate was probably
A) sucrose.
B) maltose.
C) lactose.
D) cellulose.
E) glycogen.

Question

Quizplus · Accepted Answer

Lactose is a disaccharide composed of glucose and galactose, so its digestion would result in the release of those monosaccharides. Sucrose (choice A) is also a disaccharide, but it is composed of glucose and fructose, so its digestion would result in the release of glucose and fructose instead. Maltose (choice B) is a disaccharide composed of glucose and glucose, so its digestion would result in the release of glucose only. Cellulose (choice D) is a polymer of glucose that is not digestible by humans. Glycogen (choice E) is a complex carbohydrate used for energy storage in animals, but its digestion would also result in the release of glucose only.

Digestion of a Carbohydrate Results in Large Amounts of the Monosaccharides