KS3 Biology

Topic 1: Cells

Microscopy

Animal and plant cells

Specialised cells

Unicellular organisms

Movement of substances

Topic 2: Body systems

Levels of organisation

Gas exchange

Breathing

Topic 3: Reproduction

Human reproductive organ systems

Fertilisation in humans

Development of the human foetus

The human menstrual cycle

Topic 4: Ecosystems

Topic 5: The movement of energy

Aerobic respiration

Topic 6: Adaptation and inheritance

Variation

Inheritance

Competition and adaptation

Adapting to change

Natural selection

Extinction