| Date | November 2021 | Marks available | 1 | Reference code | 21N.1.HL:.tz0.9 |
| Level | Higher Level | Paper | Paper 1 | Time zone | time zone 0 |
| Command term | Question number | 9 | Adapted from | N/A |
Question
Which element is unique to the molecular formula of protein?
A. Carbon
B. Nitrogen
C. Hydrogen
D. Oxygen
Markscheme
B
Examiners report
The 2nd easiest question. Students have a good grasp of this basic structural aspect of the protein molecule.
