Multiple choice

Carbohydrates are one of the main types of nutrients and the most important source of energy for our body. Which of the following statements regarding the digestion of carbohydrates in the human gut is FALSE?

  1. The monsaccharides are absorbed by active transport.

  2. The plant fibres are passed through the digestive system as fibre.

  3. Pancreatic amylase digests all the remaining starch in the oesophagus.

  4. Salivary amylase starts the digestion of starch.

  5. The ileum enzymes attached to the epithelial cells complete the digestion of disaccharides to monosaccharides.
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C Correct answer
Explanation

Pancreatic amylase digests all the remaining starch in the duodenum. Amylase digests starch molecules from the ends of the chains in two-glucose units, forming the disaccharide maltose. Glycogen is also digested here.

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