| Date | November 2015 | Marks available | 1 | Reference code | 15N.1.HL.TZ0.26 |
| Level | Higher level | Paper | Paper 1 | Time zone | TZ0 |
| Command term | Question number | 26 | Adapted from | N/A |
Question
The image shows the structure of hemoglobin.
What determines the primary structure of hemoglobin?
A. Genetic information
B. Hydrogen bonding
C. Four polypeptide chains
D. Side chain interactions
Markscheme
A
Examiners report
The image was not needed to answer the question, but seemed to have misled some candidates to answer four polypeptide chains instead of genetic information determining the primary structure.
