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Biology

IB Biology investigates living systems at various levels, from molecules to ecosystems. Students explore topics such as cell biology, genetics, ecology, and human physiology, developing scientific inquiry skills through practical work and research.

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21,501 students
4.2 average grade
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IB Biology vs A-level Biology cover image
Biology 
IB Biology vs A-level Biology

A detailed guide to the differences between IB and A-level Biology. Use this post when deciding which high school Biology course to choose.

23 Feb 2026
21,501 students
4.2 average grade
Difficulty
Grade distribution