A2.1.6—RNA as presumed first genetic material Topic Practice
A2.1.6—RNA as presumed first genetic material Topic Practice

IB Biology syllabusBiology SL/HLFirst assessment 2025
Practise explaining why RNA is linked to early life by using its ability to store information, self-replicate and act catalytically.
How this is tested
- describe RNA structure and evidence for its early role in storing information
- explain how self-replication and catalytic activity could benefit protobionts
- outline why ribozymes support RNA having roles beyond genetic storage
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