Digestion and Absorption

Digestion and Absorption

  • Previous knowledge of the digestive system structure and function assumed from GCSE.
  • Enzymes are linked to digestion - review this prior to digestion.
  • Specific enzymes involved in digestion include exo and endopeptidases, membrane-bound dipeptidases, amylase, lipases, and the role of bile salts.
  • These all link to the surface area.
  • Absorption of digestion products by cells lining the ileum of mammals involves mechanisms such as co-transport mechanisms for amino acids and monosaccharides absorption, and the role of micelles in lipids absorption.
  • Digestion may be linked to genetics, disease, cancer and practicals like the use of visking tubing as a model.
  • Use a mind map to show these links and a flow chart to revise the stages of digestion.