IB DP Biology: SL复习笔记2.2.4 Skills: Visualising Carbohydrates

Molecular Visualisation: Carbohydrates

  • Online learning tools exist that can provide visualisations of large biomolecules
  • Mouse functions can zoom and rotate molecules
  • Many of these make use of JMol software, a database of large molecules that can be visualised in near-3D
  • The differences between cellulose, starch and glycogen can be observed in close to 3-D quality
  • An Internet search for 'molecular visualisation software' will identify some good options
  • Features include
    • Loading multiple molecules to show independent movement
    • Surface topography; as many biological reactions are on a theme of 3-D shapes fitting together
    • Cavity visualisation; has applications when looking at structures eg. channel proteins in membranes
    • The appearance of atoms can be adapted to fill space or show gaps in molecules eg. the helical nature of amylose
  • Having a visualisation of these molecules helps to understand how they have evolved to fulfil their specific functions