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