B1.1.3—Digestion by hydrolysis Topic Practice
B1.1.3—Digestion by hydrolysis Topic Practice

IB Biology syllabusBiology SL/HLFirst assessment 2025
Practise how hydrolysis breaks dietary carbohydrates and lipids into smaller molecules for absorption in the human digestive system.
How this is tested
- state hydrolysis as the reaction producing monosaccharides from disaccharides
- explain how amylase and maltase modify starch into absorbable glucose
- apply dialysis-tubing models to predict starch and sugar movement after digestion
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