IB Biology SL 1.2.8 Complementary Base Pairing Question Bank
Practise IB Biology SL 1.2.8 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 antiparallel DNA strand using A–T and C–G pairing rules.
- Identify hydrogen bonds and covalent links in DNA diagrams and name the connected bases.
A1.2.8—Complementary base pairing 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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