The AQA A-Level Biology Paper 1 Exam is on Thurs 4th June. Here are my observations about which topics haven't been examined for a while and could come up.

General observations:

2026

• Chromatography (not yet)
• Water (2019)
• Prokaryotic vs eukaryotic cells (2022)
• Root tip squash (2018)
• Antibody (last big question 2021)
• HIV (2019)
• Fish gills (2022)
• Insect trachea (2023)
• Xerophyte (2019)
• Micelles (last 2020)
• Dipeptidases (2017)
• Cardiac cycle (2020)
• Transpiration (2022)
• Translocation (2018 / 2022)
• Gene definition (not yet) / non-coding sequences definition (2020)
• Stabilising selection (2019)
• Species richness / community (2018)
• Random sampling (2019)
• Index of Diversity last in 2022
• Observable characteristics (3.4.7 investigating diversity) (2017)
• Ways to collect and process data (3.4.7 investigating diversity) (2017)

It is vital to revise and prepare for ALL topics. This is not a set of predictions for the paper, rather a set of observations of the topics that haven't been deeply assessed for a while.

Good luck everyone!