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Cambridge IGCSE Biology

7.3Physical digestion

Physical digestion in Cambridge IGCSE Biology: what the syllabus expects you to know, the learning objectives and how to practise.
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Learning objectives

What the syllabus expects you to be able to do.

  1. 7.3.1Describe physical digestion and state that it increases the surface area of food for enzymes.
  2. 7.3.2Identify the types of human teeth, describe their structure and describe their functions in physical digestion.
  3. 7.3.3Describe the role of the stomach in physical digestion.
  4. 7.3.4Supplement: outline how bile emulsifies fats and oils, increasing the surface area for chemical digestion.

Lessons

  • Teeth and physical digestion

    22 min

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Sample question

A sample question on this topic. Answer it, check it, then read the worked answer.

Physical digestion: sample question

1 mark

True or false: physical digestion breaks large food molecules down into smaller molecules.

Is the statement true or false?

Turn Physical digestion into a strength.

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