Biology study guides

A deep-dive AQA A-Level Biology guide to section 3.2 Cells. Covers eukaryotic and prokaryotic structure, viruses, microscopy and cell fractionation, the cell cycle and mitosis, membrane transport, and cell recognition and the immune system, with the exam patterns AQA repeats.

A deep-dive AQA A-Level Biology guide to section 3.3 (Organisms exchange substances with their environment). Ties together surface area to volume ratio and Fick's law, gas exchange in insects, fish and plants, digestion and co-transport, and mass transport in animals and plants, with the exam patterns AQA repeats.

A deep-dive overview of AQA A-Level Biology section 3.4. Connects DNA structure, the genetic code, transcription and translation, mutation, meiosis, natural selection and taxonomy into one revision narrative, with the exam patterns AQA repeats.

A deep-dive guide to AQA A-Level Biology section 3.5. Connects photosynthesis, respiration, energy flow through ecosystems, productivity (GPP and NPP), and the nitrogen and phosphorus cycles, with the exact mark-scheme language and calculation skills AQA repeats.

A deep-dive AQA A-Level Biology guide to section 3.6 (organisms respond to changes in their environment). Covers stimuli and responses, the nerve impulse, synaptic transmission, receptors, muscle contraction, blood glucose control and osmoregulation, with the exam patterns AQA repeats.

A deep-dive AQA A-Level Biology guide to section 3.7. Covers inheritance and the chi-squared test, the Hardy-Weinberg principle, natural selection, genetic drift and speciation, populations and carrying capacity, mark-release-recapture, and succession and conservation, with the calculations and answer structures AQA repeats.

A deep-dive guide to AQA A-Level Biology 3.8, The control of gene expression. Connects gene mutations, transcription factors and siRNA, epigenetics, the genetics of cancer, recombinant DNA technology and gene probes, sequencing and genetic fingerprinting into one exam-ready story, with the question patterns AQA repeats.

A complete walkthrough of AQA A-Level Biology section 3.1 (Biological molecules). Covers monomers and polymers, condensation and hydrolysis, carbohydrates, lipids, proteins and enzymes, DNA, RNA and ATP, water, inorganic ions, and every required biochemical test, with the exam phrasing AQA rewards.