| Date | May 2010 | Marks available | 1 | Reference code | 10M.1.HL.TZ1.5 |
| Level | Higher level | Paper | Paper 1 | Time zone | Time zone 1 |
| Command term | Determine | Question number | 5 | Adapted from | N/A |
Question
Which of the following take(s) place during interphase and mitosis in animal cells?
I. Re-formation of nuclear membranes
II. Pairing of homologous chromosomes
III. DNA replication
A. I only
B. I and II only
C. II and III only
D. I and III only
Markscheme
D
Examiners report
This question discriminated well. Many candidates answered the correct option, but many went for C. This clearly showed they did not know the difference between mitosis and meiosis. The question may have been badly worded, as candidates might have been looking for a process that occurred in both the stages rather than either of them. In this case there would have been no correct answer.
