CAIE A-Level Biology AS 6.1.1 Nucleotide Structure Questions
Describe nucleotide structure and how nucleotides form nucleic acids, using evidence from each question and mark scheme.
- Syllabus
- 2028–2030
- Course
- Biology 9700
- Level
- AS
Exam points
- Describe the structure of nucleotides and explain how they form nucleic acids.
CAIE A-Level Biology AS 6.1.1 Nucleotide Structure Questions question 1
[Maximum number: 1]
Which statements are correct for all nucleotides?
1 The nitrogen-containing base is always attached to carbon atom 1 of the pentose.
2 The phosphate group is always attached to carbon atom 5 of the pentose.
3 A condensation reaction occurs to join the nitrogen-containing base to the pentose.
4 Nucleotides are linked together by condensation reactions between phosphate groups.
A
1, 2 and 3
B
1 and 2 only
C
1, 3 and 4
D
2, 3 and 4
A
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