| Date | May 2011 | Marks available | 1 | Reference code | 11M.1.SL.TZ1.7 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 1 |
| Command term | Question number | 7 | Adapted from | N/A |
Question
Which of the following are connected by hydrogen bonds?
A. Hydrogen to oxygen within a molecule of water
B. Phosphate to sugar in a DNA molecule
C. Base to sugar in a DNA molecule
D. Hydrogen to oxygen between two different molecules of water
Markscheme
D
Examiners report
N/A
Syllabus sections
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