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CAIE IGCSE Biology 7.3.2 Physical Digestion Increases Questions

Practise explaining how breaking food into smaller pieces increases total surface area, creating more contact between digestive enzymes and their substrates.

Syllabus
2026–2028
Course
Biology 0610

Exam points

  • explain that physical digestion or emulsification breaks food/fat into smaller pieces or droplets, increasing surface area for digestive enzyme action and speeding chemical digestion

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