OCR A Level Biology Revision Notes

Free OCR A Level Biology revision notes covering the most essential content in the OCR A specification. Make revision clearer, faster, and less overwhelming by focusing on the most commonly encountered content and concepts in exams.

152 topics

Modules 2 – 6

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OCR A Level Biology Revision Notes
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  1. Microscopy
  2. Microscopy Calculations
  3. Preparing Microscope Slides
  4. Eukaryotic Cell Structure
  5. Prokaryotic Cell Structure
  6. Organelle Involvement in Protein Synthesis
  7. Water
  8. Introduction to Macromolecules
  9. Carbohydrates
  10. Lipids
  11. Proteins
  12. Inorganic Ions
  13. Chemical Tests for Biomolecules
  14. Colorimetry
  15. Chromatography
  16. Nucleotides and Nucleic Acids
  17. DNA Replication
  18. Genetic Code
  19. Protein Synthesis
  20. Enzymes
  21. Biological Membranes
  22. Water Potential and Osmosis
  23. Eukaryotic Cell Cycle
  24. Mitosis and Cytokinesis
  25. Meiosis
  26. Stem Cells
  27. Organisation in Animals
  28. Organisation in Plants
  1. Exchange Surfaces
  2. Mammalian Gaseous Exchange System
  3. Mammalian Ventilation
  4. Oxygen Uptake in Mammals
  5. Measuring Oxygen Uptake in Mammals
  6. Ventilation and Gas Exchange in Gills
  7. Ventilation and Gas Exchange in Insects
  8. Transport Systems in Animals
  9. Blood Vessels
  10. The Heart
  11. Haemoglobin and Red Blood Cells
  12. Tissue Fluid Formation
  13. Transport Systems in Plants
  14. Plant Vascular Systems
  15. Plant Transport of Water
  16. Plant Adaptations to Water
  17. Translocation
  1. Communicable Diseases
  2. Plant Defences Against Pathogens
  3. Non-Specific Defences in Animals
  4. White Blood Cells and Secondary Defences
  5. The Primary and Secondary Immune Response
  6. Immunity
  7. Antibodies
  8. Autoimmune Diseases
  9. Vaccination and Epidemics
  10. Developing New Medicines
  11. Antibiotics and Their Use
  12. Biodiversity
  13. Conserving Biodiversity
  14. Measuring Biodiversity
  15. Measuring Genetic Biodiversity
  16. Variation
  17. Causes of Variation
  18. Adaptations
  19. Natural Selection
  20. Evolution and Speciation
  21. Evidence for Natural Selection
  22. Charles Darwin and Alfred Russel Wallace
  23. Classification and Phylogenetics
  1. Introduction to Communication Systems
  2. Homeostasis and Feedback Systems
  3. Thermoregulation: Ectothermy and Endothermy
  4. The Importance of Excretion
  5. Functions of the Liver
  6. Liver Anatomy and Histology
  7. Kidney Anatomy and Histology
  8. Kidney Nephrons: Filtering the Blood
  9. Osmoregulation: The Collecting Duct and ADH
  10. Kidney Failure
  11. Urine Analysis
  12. Introduction to the Nervous System
  13. Sensory Receptors
  14. Neurones
  15. Nerve Impulses
  16. Synapses
  17. Introduction to the Endocrine System
  18. The Adrenal Glands
  19. The Pancreas
  20. Control of Blood Glucose
  21. Diabetes Mellitus
  22. Introduction to Plant Responses
  23. Hormonal Control of Stem Elongation
  24. Hormonal Control of Seed Germination
  25. Hormonal Control of Apical Dominance
  26. Introduction to Communication Systems in Animals
  27. The Mammalian Nervous System
  28. Mammalian Muscle Structure
  29. Neuronal Control of Striated Muscle
  30. Photosynthesis and Chloroplasts
  31. The Light-Dependent Reactions
  32. The Light-Independent Reactions
  33. Factors Affecting the Rate of Photosynthesis
  34. Thin-Layer Chromatography of Plant Pigments
  35. Respiration and Mitochondria
  36. Aerobic Respiration
  37. Anaerobic Respiration
  38. Respiratory Quotient
  39. The Interrelationship Between Photosynthesis and Respiration
  40. Factors Affecting the Rate of Respiration
  41. Investigating the Rate of Respiration
  1. Cellular Control of Gene Expression
  2. The Lac Operon
  3. Controlling the Development of Body Form
  4. Generating Genetic Variation
  5. Introduction to Genetic Inheritance
  6. Principles of Mendelian Inheritance
  7. Genetic Diagrams and Punnett Squares
  8. Multiple Alleles
  9. Codominance
  10. Autosomal Linkage and Sex Linkage
  11. Epistasis
  12. Continuous and Discontinuous Variation
  13. Chi-squared Test
  14. Evolution and Natural Selection
  15. Geographical and Reproductive Isolation
  16. Hardy-Weinberg
  17. Artificial Selection
  18. DNA Sequencing
  19. The Polymerase Chain Reaction
  20. Electrophoresis
  21. DNA Profiling
  22. Bioinformatics and Computational Biology
  23. Genetic Modification
  24. Gene Therapy
  25. Ethical Issues in Genetic Manipulation
  26. Cloning in Plants
  27. Natural and Artificial Cloning in Animals
  28. Introduction to Biotechnology
  29. Culturing Microorganisms
  30. Growth Curve of Microorganisms
  31. Batch and Continuous Fermentation
  32. Immobilised Enzymes
  33. Ecosystems
  34. Biomass Transfers
  35. Manipulating Biomass Transfers
  36. Recycling in Ecosystems
  37. Succession
  38. Measuring Abundance
  39. Measuring Distribution
  40. Populations and Limiting Factors
  41. Interactions Between Populations
  42. Conservation and Preservation
  43. Managing Ecosystems and Resources

Good for revision. Not enough on their own.

Revision notes are great for consolidating what you know, but used alone they’ll likely get you to a C grade at most. For the depth and detail the higher grades require, our textbook covers every topic in full.

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