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KS3 Biology

KS3 Science · KS3 — Explore life from cells to ecosystems. Understand how living organisms work, reproduce, and interact with their environment.

Every syllabus outline below is free to read. Register free to open the notes inside them.

Topic 1
Cells
Structure and function of animal and plant cells, including cell organelles and microscopy.
Topic 2
Organ Systems
How organs work together in digestive, respiratory, and circulatory systems.
Topic 3
Reproduction
Sexual and asexual reproduction in plants and animals, including the menstrual cycle.
Topic 4
Ecosystems
Food chains, food webs, energy transfer, and the impact of human activity on ecosystems.
Topic 5
Inheritance & Variation
DNA, genes, chromosomes, and how characteristics are inherited. Natural selection.
Topic 6
Photosynthesis
How plants produce glucose using light energy, carbon dioxide, and water.
Topic 7
Respiration
Aerobic and anaerobic respiration — how cells release energy from glucose.
Topic 8
Health & Disease
Communicable diseases, the immune system, vaccines, and non-communicable diseases.