| Date | May 2009 | Marks available | 1 | Reference code | 09M.1.SL.TZ1.10 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 1 |
| Command term | Question number | 10 | Adapted from | N/A |
Question
What is a codon?
A. A sequence of nucleotides on rRNA that corresponds to an amino acid
B. A sequence of nucleotides on mRNA that corresponds to an amino acid
C. A sequence of nucleotides on tRNA that corresponds to an amino acid
D. A sequence of nucleotides on DNA that corresponds to an amino acid
Markscheme
B
Examiners report
N/A
Syllabus sections
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