| Date | May 2010 | Marks available | 1 | Reference code | 10M.1.SL.TZ2.3 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 2 |
| Command term | Identify | Question number | 3 | Adapted from | N/A |
Question
How can cells in a multicellular organism differentiate?
A. They express some of their genes but not others.
B. They all have a different genetic composition.
C. Different cells contain a different set of chromosomes.
D. Different cells do not have some of the genes.
Markscheme
A
Examiners report
Some teachers commented that answer D was not quite specific and could confuse the candidates. This was the least chosen option. Most candidates went for the correct answer, making this question quite an easy one for most and a very good discriminator.
Syllabus sections
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