Multiple choice

Digestion of which of the following constituent of food is most complex?

  1. Lactose

  2. Glucose

  3. Fructose

  4. Starch

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Starch is a polysaccharide that requires breakdown into simpler sugars before absorption. It must first be digested by salivary and pancreatic amylase into maltose, then further broken down by maltase into glucose. Lactose (a disaccharide) only requires lactase, while glucose and fructose are monosaccharides that can be absorbed directly without digestion.

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