IB Biology SL A1.2.3 Nucleic Acid Bonding Question Bank
Practise IB Biology SL A1.2.3 by identifying covalent and hydrogen bonding between nucleotides in DNA and RNA polymers.
- Syllabus
- First assessment 2025
- Course
- Biology SL
- Level
- SL
Exam points
- Distinguish covalent links within strands from hydrogen bonds between complementary bases.
- Use nucleotide diagrams to identify bonds and polymer arrangement in DNA or RNA.
A1.2.3—Sugar-phosphate bonding question 1
[Maximum number: 2]
Outline the bonding between DNA nucleotides.
hydrogen bonds between nucleotides of opposite strands/complementary bases/adenine and thymine and cytosine and guanine;
covalent bonds between nucleotides within strands/between sugar/deoxyribose and phosphate;
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