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A topic-by-topic revision guide for the biodiversity and evolution section of the Edexcel A-Level Biology 9BI0 specification — taxonomy, three-domain classification, phylogenetics, biodiversity measurement, natural selection, speciation, evidence for evolution, conservation and human impact.

A topic-by-topic revision guide for the control systems section of the Edexcel A-Level Biology 9BI0 specification — animal hormones, neurones and synapses, reflex arcs and sensory receptors, homeostasis, thermoregulation, blood glucose, osmoregulation in the kidney, and plant hormones.

A topic-by-topic revision guide for the energy and biological processes section of the Edexcel A-Level Biology 9BI0 specification — light-dependent reactions, the Calvin cycle, glycolysis, the link reaction and Krebs cycle, oxidative phosphorylation, anaerobic respiration, and metabolic integration.

A topic-by-topic revision guide for the exchange and transport section of the Edexcel A-Level Biology 9BI0 specification — surface area to volume, gas exchange in humans and other organisms, the human heart and circulation, blood vessels, haemoglobin and oxygen transport, xylem and phloem in plants.

A topic-by-topic revision guide for the immunity and infection section of the Edexcel A-Level Biology 9BI0 specification — pathogen classes, bacterial growth and aseptic technique, disease transmission, plant defences, innate and adaptive immunity, antibodies, vaccination, and antimicrobial resistance.

A topic-by-topic revision guide for the modern genetics section of the Edexcel A-Level Biology 9BI0 specification — gene structure, transcription and translation, gene expression, epigenetics, PCR, gel electrophoresis, recombinant DNA, gene therapy, genomics and bioinformatics, ethics.

AI Examiner Mode marks your answer the way a real examiner would: sentence by sentence, with an Assessment Objective breakdown, your current grade band, and a target for the next grade up. Voice narration optional.

Every lesson on LearningBro now has hands-free voice in the built-in AI tutor. Tap the mic to speak instead of typing, tap a reply to have it read aloud, or toggle auto-read so every reply is spoken.

A topic-by-topic revision guide for the Edexcel A-Level Chemistry paper strategy section of the 9CH0 specification — paper structure, time-per-mark budget, command words, calculation technique, extended responses, practical questions and exam-day routine.

A topic-by-topic revision guide for the Edexcel A-Level Chemistry analytical chemistry section of the 9CH0 specification — TOF mass spectrometry, fragmentation, IR spectroscopy, 1H and 13C NMR and chromatography.

A topic-by-topic revision guide for the Edexcel A-Level Chemistry acids, bases and buffers section of the 9CH0 specification — Brønsted-Lowry theory, Ka and pH calculations, buffer composition, Henderson-Hasselbalch, titration curves and indicators.

A topic-by-topic revision guide for the Edexcel A-Level Chemistry advanced organic chemistry section of the 9CH0 specification — carbonyls, carboxylic acids, esters, acyl chlorides, amines, amino acids, condensation polymers and synthesis routes.