| Date | May 2015 | Marks available | 1 | Reference code | 15M.1.SL.TZ2.9 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 2 |
| Command term | Identify | Question number | 9 | Adapted from | N/A |
Question
The image shows the structural formula of a molecule.
What is this molecule?
A. Amino acid
B. Ribose
C. Deoxyribose
D. Lactose
Markscheme
A
Examiners report
Although the question could have confused candidates by adding the charges in the amino and carboxyl termini, this was not an unfair question. The fact that the R group was fully shown should not have confused them.
