IB Biology SL 2.1.8 Genetic code and codons Question Bank
Practise IB Biology SL 2.1.8 by explaining how codons encode polypeptide sequences.
- Syllabus
- First assessment 2025
- Course
- Biology SL
- Level
- SL
Exam points
- Describe the relationship between codons and amino acids in a polypeptide.
- Identify start or stop codons and use the genetic code in sequence questions.
D1.2.8—Genetic code features question 1
A short base sequence of mRNA and a table of the genetic code are shown below.
Sequence of mRNA
AUGAGCCGAAGGUAGCUG
Table of the genetic code
Question (a)
(a)
Outline the function of codons.
[ 1 ]
Question (b)
(b)
Suggest a hypothesis that accounts for the slightly different meaning of some codons in a very limited number of organisms.
[ 1 ]
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