IB ESS IA Ideas and Tips: How to Score a 7

Learn how DNA’s antiparallel structure supports accurate replication and why this feature is essential for genetic stability in living organisms.

Learn how deletions and insertions change protein structure and function by altering amino acid sequences and disrupting folding.

Learn how transcriptional activators and repressors fine-tune gene expression by regulating transcription initiation in eukaryotic cells.