CAIE A-Level Biology AS 6.1.3 Pyrimidines Cytosine Thymine Uracil Questions
Explain pyrimidine structure and roles in nucleic acids, using evidence from each question and mark scheme.
- Syllabus
- 2028–2030
- Course
- Biology 9700
- Level
- AS
Exam points
- Explain pyrimidine structure, including cytosine, thymine and uracil, and their roles in nucleic acids.
CAIE A-Level Biology AS 6.1.3 Pyrimidines Cytosine Thymine Uracil Questions question 1
The diagrams show the chemical structure of four bases.
1
2
3
4
Which diagrams show thymine and cytosine?
A
1 and 2
B
1 and 4
C
2 and 3
D
3 and 4
All question bank results loaded