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CAIE IGCSE Biology 7.3.1 Definition of Physical Digestion

Practise defining physical digestion as breaking food into smaller pieces without changing its molecules, then distinguish chewing or churning from enzyme action.

Syllabus
2026–2028
Course
Biology 0610

Exam points

  • define physical digestion as breaking food into smaller pieces without changing its molecules
  • identify chewing and stomach churning as physical rather than enzyme-controlled digestion
  • link smaller food pieces to increased surface area while keeping molecular identity unchanged

7.3.1—Physical digestion as the breakdown question 1

[Maximum number: 2]

Fig. 1.1 shows part of the human digestive system.

Fig. 1.1

Fig. 1.1

Describe physical digestion.

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