KS3 Biology

Topic 1: Cells and organisation

Animal and plant cells

Specialised cells

Movement of substances

Unicellular organisms

Levels of organisation

Topic 2: The skeletal and muscular systems

The human skeletal system

Topic 3: Nutrition and digestion

A balanced diet

Consequences of an unbalanced diet

The human digestive system

Bacteria and enzymes in the digestive system

Topic 4: Breathing and respiration

The human respiratory system

Exercise, asthma and smoking

Aerobic respiration

Anaerobic respiration

Topic 5: Plants and photosynthesis

Gas exchange in plants

The photosynthesis reaction

The need for photosynthesis

Topic 6: Reproduction

The human reproductive systems

Fertilisation in humans

Development of the human foetus

The human menstrual cycle

Flowers and pollination

Fertilisation in plants

Seeds and germination

Topic 7: Ecosystems

Organisms and their environment

The interdependence of organisms

The importance of plant reproduction

Topic 8: Adaptation and inheritance

DNA and inheritance

Competition and adaptation

Adapting to change

Natural selection

Topic 9: Drugs and health

Drugs and mental health

Drugs and physical health

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