D1.2.1—Transcription Topic Practice
D1.2.1—Transcription Topic Practice

IB Biology syllabusBiology SL/HLFirst assessment 2025
Practise describing transcription as mRNA formation from a DNA template, including RNA polymerase, strand use and complementary base pairing.
How this is tested
- explain how RNA polymerase separates DNA and links RNA nucleotides
- distinguish transcription from translation by product, location and machinery
- apply A-U and G-C pairing to describe mRNA copied from a DNA template
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