IB Biology SL A1.2.8 Complementary Base Pairing Questions
Practise IB Biology SL A1.2.8 by completing antiparallel DNA strands and identifying base pairs and bonds from molecular diagrams.
- Syllabus
- First assessment 2025
- Course
- Biology SL
- Level
- SL
Exam points
- Complete a complementary DNA strand by applying A–T and G–C pairing to the displayed sequence.
- Identify hydrogen bonds between complementary bases and distinguish them from covalent sugar-phosphate bonds in a DNA diagram.
- Use complementary A–T and C–G pairing to infer missing bases or base percentages and recognize its role in replication, transcription and translation.
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IB Biology SL A1.2.8 Complementary Base Pairing Questions question 1
The following diagram shows a short stretch of DNA. What bases are indicated by labels Y and Z ?
Y
Z
thymine
adenine
thymine
guanine
uracil
guanine
uracil
adenine
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