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Biology notes

Pick a main topic to see its subtopics. Each subtopic has its own revision guide.

Year 1

AS content
Topic 1

Biological molecules

8 of 8 subtopics covered

Topic 2

Cells

4 of 4 subtopics covered

Topic 3

Organisms exchange substances with their environment

4 of 4 subtopics covered

Topic 4

Genetic information, variation and relationships between organisms

7 of 7 subtopics covered

Year 2

Second-year A-Level content
Topic 5

Energy transfers in and between organisms

4 of 4 subtopics covered

Topic 6

Organisms respond to changes in their environments

4 of 4 subtopics covered

Topic 7

Genetics, populations, evolution and ecosystems

4 of 4 subtopics covered

Topic 8

The control of gene expression

4 of 4 subtopics covered