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A-level Biology

AQA AS Biology

Welcome to the downloads page for AQA AS Biology. Here you will find extra resources to help you get ready for the big day, including answers to the exam practice questions.

Unit 1 Biology and disease

1 The causes of disease

2 The digestive system

3 Cells, diffusion and absorption

4 The lungs and lung disease

5 The heart and heart disease

6 The immune system

Unit 2 The variety of living organisms

7 The nature of variation

8 DNA and cell division

9 Genetic diversity and selection

10 Surface area, volume, gas exchange and transport

11 Biodiversity and classification