O-LevelBiologyHuman Nutrition5090/11 · May/June 2018 · Q101 Mark

The surface area of the small intestine is increased by the villi in the intestine wall. How does the increased surface area help absorption of digested materials?

AIt makes peristalsis more efficient.

BMore mucus is produced for lubrication.

CMore starch and protein can be absorbed.

DThere is a greater chance of food molecules diffusing into the blood.

✓ Correct answer

D: There is a greater chance of food molecules diffusing into the blood.

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Topic: Human Nutrition, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2018 Paper 1 Variant 1, question 10.

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