3.3 Organisms exchange substances with their environment: AQA AS Level Biology Questions

Practise 3.3 organisms exchange substances with their environment with AQA AS Level Biology questions and mark schemes. Revise 3.3.1 Surface area to volume ratio, 3.3.2 Gas exchange, 3.3.3 Digestion and absorption.

The topics below follow the course specification. Question availability depends on the papers uploaded; use the question bank filters to see current coverage.

What to revise

• 3.3.1 Surface area to volume ratio
• 3.3.2 Gas exchange
• 3.3.3 Digestion and absorption
• 3.3.4.1 Mass transport in animals
• 3.3.4.2 Mass transport in plants

Use questions to check your understanding

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