Biology 1, 2 and 3 are the units that you learnt about in Year 9 and at the end of Year 10. In B1 you learnt about genetics and inheritance, in B2 you learnt about the immune system, heart disease and water balance and in B3 you learnt about ecosystems and food chains.

Please choose a Biology unit to revise from the menu, try a Past Paper or click the arrow below to start at the beginning of the unit.

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GCSE Biology Menu   B1