| Date | May 2013 | Marks available | 6 | Reference code | 13M.3.HL.TZ1.14 |
| Level | Higher level | Paper | Paper 3 | Time zone | Time zone 1 |
| Command term | Outline | Question number | 14 | Adapted from | N/A |
Question
The liver is a complex organ with a wide range of functions. Outline the functions of the liver.
Markscheme
a. produces bile for digestion/emulsification of fats/lipids;
b. regulates blood glucose level through glucose-glycogen reaction;
c. detoxification/example of detoxification (eg contains catalase for the breakdown of hydrogen peroxide);
d. manufactures plasma proteins/albumins/fibrinogen;
e. manufactures cholesterol;
f. destroys red blood cells by phagocytosis;
g. breaks down haemoglobin from red blood cells;
h. stores iron;
i. stores vitamin A and D;
j. deaminates excess amino acids/formation of urea;
Examiners report
Some candidates did well on this longer response question with many scoring 3 marks. However, there were also many responses that were vague and lacked detail.
