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4BI1IGCSE

Biology

19 topics · 5 specification chapters

4BI1 Topics

Frequency legend

High (≥14%)

Above avg (10 to 13%)

Average (<10%)

Prioritise These First

Highest-frequency topics (2018 to 2024)

These topics account for the majority of exam marks. Revise them first.

1

Diffusion, Osmosis & Active Transport22%

2

Photosynthesis20%

3

Transport in Plants19%

4

Cell Structure18%

5