| Date | May 2011 | Marks available | 1 | Reference code | 11M.1.HL.TZ1.7 |
| Level | Higher level | Paper | Paper 1 | Time zone | Time zone 1 |
| Command term | Question number | 7 | Adapted from | N/A |
Question
Which type of molecule is shown in the diagram below?
A. Peptide
B. Carbohydrate
C. Lipid
D. Nucleic acid
Markscheme
A
Examiners report
This question discriminated well but many candidates found this difficult. Candidates did not seem to recognize the amino acids connected by the peptide bonds. Perhaps they were distracted by the real side groups indicated rather than simply “R”.
