What dietary substrate is broken down into glucose and galactose by the action of intestinal enzymes?
A: fructose
B: lactose
C: maltose
D: mannose
E: sucrose
Correct answer: B Explanation Lactose is a disaccharide which contains galactose and glucose. Maltose is a disaccharide, composed of glucose molecules. Glucose and fructose combine to form sucrose. Fructose is a monosaccharide and maltose is an aldohexose monomer.