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IB Biology HL B1.1.3 Digestion By Hydrolysis Questions

Practise IB Biology HL B1.1.3 by linking amylase, proteases and lactase to hydrolysis products and tracing how digested molecules become available for absorption.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Trace enzyme-catalysed hydrolysis of starch, proteins and lipids to the named products formed in human digestion.
  • Apply hydrolysis evidence to identify digestive enzymes and their substrates or products, including amylase, proteases and lactase.
  • Relate hydrolysis products to their movement or absorption after digestion in the gut.

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Study B1.1.3—Digestion by hydrolysis conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Biology HL B1.1.3 Digestion By Hydrolysis Questions question 1

[Maximum number: 2]

Identify two hydrolysis reactions that occur in the small intestine.

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