| Date | May 2010 | Marks available | 3 | Reference code | 10M.3.sl.TZ1.B2 |
| Level | SL | Paper | 3 | Time zone | TZ1 |
| Command term | State | Question number | B2 | Adapted from | N/A |
Question
State the causes of the three deficiency diseases, beriberi, goitre and pellagra.
Beriberi:
Goitre:
Pellagra:
Markscheme
Beriberi
lack/deficiency of vitamin B1/thiamine;
Goitre
lack/deficiency of iodine;
Pellagra
lack/deficiency of vitamin B3/niacin;
Examiners report
Many candidates were unable to state the causes of the deficiency diseases. Some simply guessed the same answer three times. The cause of goitre was best known of the three diseases.
