CAIE IGCSE Biology 7.3.2 Surface Area in Digestion
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
7.3.2—Physical digestion increases question 1
[Maximum number: 1]
Why does chewing food speed up digestion?
A
Bacteria in the food are killed.
B
Food is mixed with protease.
C
The surface area of the food is increased.
D
The taste of food is improved.
C
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