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B1.1.5—Polysaccharides as energy storage Topic Practice

B1.1.5—Polysaccharides as energy storage Topic Practice
IB Biology syllabusBiology SL/HLFirst assessment 2025

Practise how glucose polymers store energy, using structure, branching and glycosidic linkages to compare starch and glycogen.

How this is tested

  • compare amylose and amylopectin using branching and glycosidic bonds
  • explain why compact, insoluble polysaccharides work well as energy stores
  • interpret diagrams to distinguish starch, glycogen and amylopectin structures
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