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Date May 2018 Marks available 3 Reference code 18M.3.SL.TZ2.17
Level Standard level Paper Paper 3 Time zone Time zone 2
Command term Explain Question number 17 Adapted from N/A

Question

The bar chart indicates that both males and females in the US eat, on average, less fibre than is recommended.

 

Explain the importance of dietary fibre.

Markscheme

a. ensure correct transit rate / movement of food through the intestines 

b. avoid constipation / difficulty in empty bowels / difficulty in egestion 

c. correct levels of water reabsorbed 

d. avoid overlong exposure to fat soluble chemicals 

e. decreased risk of colon cancer/hemorrhoids/appendicitis 

f. decreases the rate of absorption of glucose 

g. decreases hunger so less obesity/diabetes

Examiners report

 

Syllabus sections

Option D: Human physiology » Option D: Human physiology (Core topics) » D.2 Digestion
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Option D: Human physiology » Option D: Human physiology (Core topics)
Option D: Human physiology

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