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Biology notes for Secondary Year 4

45 sections with theory, interactive examples, and 870 exercises graded instantly by AI.

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Biomolecules

Bioelements and biomolecules

Cell biology

The cell and its organisation

The plasma membrane

The cell cycle

Genetics and evolution

Hereditary material

Genetics and inheritance

Evolution

Molecular genetics

From DNA to protein

Mendelian genetics

History of the Earth and of life

Geological time

The history of life

Animal physiology

Animal histology

Animal nutrition

The interaction function

Animal reproduction

Ecology and sustainability

Ecosystem dynamics

Sustainability and global change