| Date | May 2010 | Marks available | 3 | Reference code | 10M.3.sl.TZ1.F1 |
| Level | SL | Paper | 3 | Time zone | TZ1 |
| Command term | State | Question number | F1 | Adapted from | N/A |
Question
Simple sugars are nutrients and are also described as monosaccharides.
State three characteristic features of all monosaccharide molecules.
Markscheme
they have the empirical formula CH2O;
they contain one carbonyl/C=O group;
they contain at least two hydroxy/–OH groups;
Examiners report
Many candidates stated physical properties of monosaccharides rather than structural features. Those who stated structural features often only gave one or two rather than the three required.
