| Date | May 2011 | Marks available | 1 | Reference code | 11M.1.HL.TZ1.28 |
| Level | Higher level | Paper | Paper 1 | Time zone | Time zone 1 |
| Command term | Question number | 28 | Adapted from | N/A |
Question
The sequence of nucleotides in a section of RNA is: GCCAUACGAUCG
What is the base sequence of the DNA sense strand?
A. CGGUAUGCUAGC
B. GCCATACGATCG
C. CGGTATGCTAGC
D. GCCAUACGAUCG
Markscheme
B
Examiners report
There still seems to be some confusion in the topic of transcription as to which is the sense or antisense strand of DNA. The syllabus specifies how this should be treated in 7.3.2.
