Core Themes A–D Revision (No AHL)
SL covers the four core themes only. Week 1 hits the highest-yield syllabus statements in each theme — the ones that appear in every recent exam session.
- Theme A — unity and diversity: water properties, nucleic acids, cell theory, classification of life
- Theme B — form and function: membrane transport, gas exchange, transport in plants, transport in animals
- Theme C — interaction and interdependence: enzymes basics, photosynthesis, respiration, neural signalling, ecosystems
- Theme D — continuity and change: DNA replication, transcription, translation, mutation, evolution, homeostasis basics
- Daily 15-question recall quiz across all four themes to spot weak syllabus statements early