Explore biological systems from molecules to ecosystems.
← Back to ALevel CoursesALevel Biology covers cell biology, genetics, evolution, and ecology.
Notes, diagrams, and summaries for ALevel Biology AS.
Organelles, microscopy, and prokaryotic vs eukaryotic cells.
Carbohydrates, lipids, proteins, and nucleic acids.
Enzyme action, factors affecting rate, and immobilisation.
Membrane structure, diffusion, osmosis, and active transport.
Cell division, mitosis, and the cell cycle.
DNA, RNA, replication, transcription, and translation.
Xylem, phloem, transpiration, and translocation.
Circulatory system, blood, and the heart.
Lungs, ventilation, and gas exchange surfaces.
Pathogens, transmission, and immune response.
Antibodies, vaccination, and immune memory.
Notes, diagrams, and summaries for ALevel Biology A2.
ATP, aerobic and anaerobic respiration, mitochondria.
Light-dependent and light-independent reactions, Calvin cycle, limiting factors.
Temperature, blood glucose, osmoregulation, stomata.
Nervous system, endocrine system, muscle contraction.
Meiosis, genetic diagrams, gene control.
Natural selection, Hardy–Weinberg, speciation.
Three-domain system, ecological surveys, conservation.
PCR, electrophoresis, genetic engineering, medical and agricultural applications.