O-LevelBiologyHuman Nutrition5090/11 · May/June 2013 · Q101 Mark

The table shows where different components of food are digested in the alimentary canal. Which option states where protein is digested? [Table showing mouth (buccal) cavity, stomach, duodenum, ileum columns with A, B, C, D rows and checkmarks/crosses. Key: ✓ = substance is digested, x = substance is not digested]

Amouth (buccal) cavity: x, stomach: ✓, duodenum: ✓, ileum: ✓

Bmouth (buccal) cavity: x, stomach: ✓, duodenum: ✓, ileum: ✓

Cmouth (buccal) cavity: x, stomach: x, duodenum: ✓, ileum: ✓

Dmouth (buccal) cavity: x, stomach: ✓, duodenum: x, ileum: ✓

✓ Correct answer

B: mouth (buccal) cavity: x, stomach: ✓, duodenum: ✓, ileum: ✓

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Topic: Human Nutrition, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2013 Paper 1 Variant 1, question 10.

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