| Date | November 2009 | Marks available | 1 | Reference code | 09N.1.SL.TZ0.7 |
| Level | Standard level | Paper | Paper 1 | Time zone | TZ0 |
| Command term | Question number | 7 | Adapted from | N/A |
Question
Which of the following chemical elements are part of biochemical molecules in living organisms?
A. nitrogen, sulfur, phosphorus and iron
B. lead, oxygen, carbon and phosphorus
C. helium, carbon, sulfur and nitrogen
D. silicon, helium, oxygen and iron
Markscheme
A
Examiners report
[N/A]
