IB Biology SL A1.2.3 Sugar Phosphate Bonding Questions
Practise IB Biology SL A1.2.3 by identifying covalent and hydrogen bonding between nucleotides in DNA and RNA polymers and diagrams.
- Syllabus
- First assessment 2025
- Course
- Biology SL
- Level
- SL
Exam points
- Distinguish covalent sugar-phosphate links within a strand from hydrogen bonds between complementary DNA bases.
- Identify the phosphate–pentose arrangement and components joined in DNA or RNA polymers.
IB Biology SL A1.2.3 Sugar Phosphate Bonding Questions 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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