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A-Level Biology
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- 1Cell structure
- 2Biological molecules
- 3Enzymes
- 4Cell membranes and transport
- 5The mitotic cell cycle
- 6Nucleic acids and protein synthesis
- 7Transport in plants
- 8Transport in mammals
- 9Gas exchange
- 10Infectious diseases
- 11Immunity
- 12Energy and respiration
- 13Photosynthesis
- 14Homeostasis
- 15Control and coordination
- 16Inheritance
- 17Selection and evolution
- 18Classification, biodiversity and conservation
- 19Genetic technology
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1. Cell structure 12 files
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2. Biological molecules 17 files
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3. Enzymes 12 files
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4. Cell membranes and transport 12 files
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5. The mitotic cell cycle 12 files
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6. Nucleic acids and protein synthesis 12 files
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7. Transport in plants 12 files
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8. Transport in mammals 15 files
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9. Gas exchange 9 files
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10. Infectious diseases 12 files
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11. Immunity 12 files
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12. Energy and respiration 11 files
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Unit Tests
13. Photosynthesis 10 files
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Unit Tests
14. Homeostasis 11 files
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15. Control and coordination 11 files
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16. Inheritance 14 files
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17. Selection and evolution 14 files
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Unit Tests
18. Classification, biodiversity and conservation 14 files
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19. Genetic technology 14 files
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Vocabulary
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Past Paper Questions
Unit Tests
2026 6 files
March session
2025 123 files
October / November session
- Paper 11 Questions Answers
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June session
- Paper 11 Questions Answers
- Paper 12 Questions Answers
- Paper 13 Questions Answers
- Paper 14 Questions Answers
- Paper 21 Questions Answers
- Paper 22 Questions Answers
- Paper 23 Questions Answers
- Paper 24 Questions Answers
- Paper 31 Questions Answers Insert
- Paper 32 Questions Answers Insert
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- Paper 41 Questions Answers
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- Paper 43 Questions Answers
- Paper 44 Questions Answers
- Paper 51 Questions Answers
- Paper 52 Questions Answers
- Paper 53 Questions Answers
- Paper 54 Questions Answers
March session
2024 94 files
October / November session
- Paper 11 Questions Answers
- Paper 12 Questions Answers
- Paper 13 Questions Answers
- Paper 21 Questions Answers
- Paper 22 Questions Answers
- Paper 23 Questions Answers
- Paper 31 Questions Answers Insert
- Paper 33 Questions Answers Insert
- Paper 34 Questions Answers Insert
- Paper 35 Questions Answers Insert
- Paper 36 Questions Answers Insert
- Paper 41 Questions Answers
- Paper 42 Questions Answers
- Paper 43 Questions Answers
- Paper 51 Questions Answers
- Paper 52 Questions Answers
- Paper 53 Questions Answers
June session
- Paper 11 Questions Answers
- Paper 12 Questions Answers
- Paper 13 Questions Answers
- Paper 21 Questions Answers
- Paper 22 Questions Answers
- Paper 23 Questions Answers
- Paper 31 Questions Insert
- Paper 32 Questions Answers Insert
- Paper 33 Questions Answers Insert
- Paper 34 Questions Answers Insert
- Paper 35 Questions Answers Insert
- Paper 41 Questions Answers
- Paper 42 Questions Answers
- Paper 43 Questions Answers
- Paper 51 Questions Answers
- Paper 52 Questions Answers
- Paper 53 Questions Answers
March session
2023 94 files
October / November session
- Paper 11 Questions Answers
- Paper 12 Questions Answers
- Paper 13 Questions Answers
- Paper 21 Questions Answers
- Paper 22 Questions Answers
- Paper 23 Questions Answers
- Paper 31 Questions Answers Insert
- Paper 33 Questions Answers Insert
- Paper 34 Questions Answers Insert
- Paper 35 Questions Answers Insert
- Paper 36 Questions Answers Insert
- Paper 41 Questions Answers
- Paper 42 Questions Answers
- Paper 43 Questions Answers
- Paper 51 Questions Answers
- Paper 52 Questions Answers
- Paper 53 Questions Answers
June session
- Paper 11 Questions Answers
- Paper 12 Questions Answers
- Paper 13 Questions Answers
- Paper 21 Questions Answers
- Paper 22 Questions Answers
- Paper 23 Questions Answers
- Paper 31 Questions Answers Insert
- Paper 32 Questions Answers Insert
- Paper 33 Questions Answers Insert
- Paper 34 Questions Answers Insert
- Paper 35 Questions Answers Insert
- Paper 41 Questions Answers
- Paper 42 Questions Answers
- Paper 43 Questions Answers
- Paper 51 Questions Answers
- Paper 52 Questions Answers
- Paper 53 Questions Answers
March session
2022 106 files
Specimen
- Specimen Questions 1
- Specimen Answers 1
- Specimen Questions 2
- Specimen Answers 2
- Specimen Questions 3
- Specimen Answers 3
- Specimen Insert 3
- Specimen Questions 4
- Specimen Answers 4
- Specimen Questions 5
- Specimen Answers 5
October / November session
- Paper 11 Questions Answers
- Paper 12 Questions Answers
- Paper 13 Questions Answers
- Paper 21 Questions Answers
- Paper 22 Questions Answers
- Paper 23 Questions Answers
- Paper 31 Questions Answers Insert
- Paper 33 Questions Answers Insert
- Paper 34 Questions Answers Insert
- Paper 35 Questions Answers Insert
- Paper 36 Questions Answers Insert
- Paper 41 Questions Answers
- Paper 42 Questions Answers
- Paper 43 Questions Answers
- Paper 51 Questions Answers
- Paper 52 Questions Answers
- Paper 53 Questions Answers
June session
- Paper 11 Questions Answers
- Paper 12 Questions Answers
- Paper 13 Questions Answers
- Paper 21 Questions Answers
- Paper 22 Questions Answers
- Paper 23 Questions Answers
- Paper 31 Questions Answers Insert
- Paper 32 Questions Answers Insert
- Paper 33 Questions Answers Insert
- Paper 34 Questions Answers Insert
- Paper 35 Questions Answers Insert
- Paper 41 Questions Answers
- Paper 42 Questions Answers
- Paper 43 Questions Answers
- Paper 51 Questions Answers
- Paper 52 Questions Answers
- Paper 53 Questions Answers
March session
2021 95 files
October / November session
- Paper 11 Questions Answers
- Paper 12 Questions Answers
- Paper 13 Questions Answers
- Paper 21 Questions Answers
- Paper 22 Questions Answers
- Paper 23 Questions Answers
- Paper 31 Questions Answers Insert
- Paper 33 Questions Answers Insert
- Paper 34 Questions Answers Insert
- Paper 35 Questions Answers Insert
- Paper 36 Questions Answers Insert
- Paper 41 Questions Answers
- Paper 42 Questions Answers
- Paper 43 Questions Answers
- Paper 51 Questions Answers
- Paper 52 Questions Answers
- Paper 53 Questions Answers
June session
- Paper 11 Questions Answers
- Paper 12 Questions Answers
- Paper 13 Questions Answers
- Paper 21 Questions Answers
- Paper 22 Questions Answers
- Paper 23 Questions Answers
- Paper 31 Questions Answers Insert
- Paper 32 Questions Answers Insert
- Paper 33 Questions Answers Insert
- Paper 34 Questions Answers Insert
- Paper 35 Questions Answers Insert
- Paper 41 Questions Answers
- Paper 42 Questions Answers
- Paper 43 Questions Answers
- Paper 51 Questions Answers
- Paper 52 Questions Answers
- Paper 53 Questions Answers
March session
- A-Level Biology — Question index
- 1.1 The microscope in cell studies
- 1.2 Cells as the basic units of living organisms
- 2.1 Testing for biological molecules
- 2.2 Carbohydrates and lipids
- 2.3 Proteins
- 3.1 Mode of action of enzymes
- 3.2 Factors that affect enzyme action
- 4.1 Fluid mosaic membranes
- 4.2 Movement into and out of cells
- 5.1 Replication and division of nuclei and cells
- 5.2 Chromosome behaviour in mitosis
- 6.1 Structure of nucleic acids and replication of DNA
- 6.2 Protein synthesis
- 7.1 Structure of transport tissues
- 7.2 Transport mechanisms
- 8.1 The circulatory system
- 8.2 Transport of oxygen and carbon dioxide
- 8.3 The heart
- 9.1 The gas exchange system
- 10.1 Infectious diseases
- 10.2 Antibiotics
- 11.1 The immune system
- 11.2 Antibodies and vaccination
- 12.1 Energy
- 12.2 Respiration
- 13.1 Photosynthesis as an energy transfer process
- 14.1 Homeostasis in mammals
- 14.2 Homeostasis in plants
- 15.1 Control and coordination in mammals
- 15.2 Control and coordination in plants
- 16.1 Passage of information from parents to offspring
- 16.2 The roles of genes in determining the phenotype
- 16.3 Gene control
- 17.1 Variation
- 17.2 Natural and artificial selection
- 17.3 Evolution
- 18.1 Classification
- 18.2 Biodiversity
- 18.3 Conservation
- 19.1 Principles of genetic technology
- 19.2 Genetic technology applied to medicine
- 19.3 Genetically modified organisms in agriculture
Topic quizzes
- 1. Cell structure
- 2. Biological molecules
- 3. Enzymes
- 4. Cell membranes and transport
- 5. The mitotic cell cycle
- 6. Nucleic acids and protein synthesis
- 7. Transport in plants
- 8. Transport in mammals
- 9. Gas exchange
- 10. Infectious diseases
- 11. Immunity
- 12. Energy and respiration
- 13. Photosynthesis
- 14. Homeostasis
- 15. Control and coordination
- 16. Inheritance
- 17. Selection and evolution
- 18. Classification, biodiversity and conservation
- 19. Genetic technology
Starter quizzes
- 1. Cell structure
- 2. Biological molecules
- 3. Enzymes
- 4. Cell membranes and transport
- 5. The mitotic cell cycle
- 6. Nucleic acids and protein synthesis
- 7. Transport in plants
- 8. Transport in mammals
- 9. Gas exchange
- 10. Infectious diseases
- 11. Immunity
Unit tests
- 1. Cell structure
- 2. Biological molecules
- 3. Enzymes
- 4. Cell membranes and transport
- 5. The mitotic cell cycle
- 6. Nucleic acids and protein synthesis
- 7. Transport in plants
- 8. Transport in mammals
- 9. Gas exchange
- 10. Infectious diseases
- 11. Immunity
- 12. Energy and respiration
- 13. Photosynthesis
- 14. Homeostasis
- 15. Control and coordination
- 16. Inheritance
- 17. Selection and evolution
- 18. Classification, biodiversity and conservation
- 19. Genetic technology
Mock papers
Course companion
Glossary
Topic handouts
- 1. Cell structure
- 2. Biological molecules
- 3. Enzymes
- 4. Cell membranes and transport
- 5. The mitotic cell cycle
- 6. Nucleic acids and protein synthesis
- 7. Transport in plants
- 8. Transport in mammals
- 9. Gas exchange
- 10. Infectious diseases
- 11. Immunity
- 12. Energy and respiration
- 13. Photosynthesis
- 14. Homeostasis
- 15. Control and coordination
- 16. Inheritance
- 17. Selection and evolution
- 18. Classification, biodiversity and conservation
- 19. Genetic technology
- 1.1 The microscope in cell studies
- 1.2 Cells as the basic units of living organisms
- 2.1 Testing for biological molecules
- 2.2 Carbohydrates and lipids
- 2.3 Proteins
- 2.4 Water
- 3.1 Mode of action of enzymes
- 3.2 Factors that affect enzyme action
- 4.1 Fluid mosaic membranes
- 4.2 Movement into and out of cells
- 5.1 Replication and division of nuclei and cells
- 5.2 Chromosome behaviour in mitosis
- 6.1 Structure of nucleic acids and replication of DNA
- 6.2 Protein synthesis
- 7.1 Structure of transport tissues
- 7.2 Transport mechanisms
- 8.1 The circulatory system
- 8.2 Transport of oxygen and carbon dioxide
- 8.3 The heart
- 9.1 The gas exchange system
- 10.1 Infectious diseases
- 10.2 Antibiotics
- 11.1 The immune system
- 11.2 Antibodies and vaccination
- 12.1 Energy
- 12.2 Respiration
- 13.1 Photosynthesis as an energy transfer process
- 13.2 Investigation of limiting factors
- 14.1 Homeostasis in mammals
- 14.2 Homeostasis in plants
- 15.1 Control and coordination in mammals
- 15.2 Control and coordination in plants
- 16.1 Passage of information from parents to offspring
- 16.2 The roles of genes in determining the phenotype
- 16.3 Gene control
- 17.1 Variation
- 17.2 Natural and artificial selection
- 17.3 Evolution
- 18.1 Classification
- 18.2 Biodiversity
- 18.3 Conservation
- 19.1 Principles of genetic technology
- 19.2 Genetic technology applied to medicine
- 19.3 Genetically modified organisms in agriculture
Lesson slides
- 1. Cell structure
- 2. Biological molecules
- 3. Enzymes
- 4. Cell membranes and transport
- 5. The mitotic cell cycle
- 6. Nucleic acids and protein synthesis
- 7. Transport in plants
- 8. Transport in mammals
- 9. Gas exchange
- 10. Infectious diseases
- 11. Immunity
- 12. Energy and respiration
- 13. Photosynthesis
- 14. Homeostasis
- 15. Control and coordination
- 16. Inheritance
- 17. Selection and evolution
- 18. Classification, biodiversity and conservation
- 19. Genetic technology
Lesson slides
- 1.1 The microscope in cell studies
- 1.2 Cells as the basic units of living organisms
- 2.1 Testing for biological molecules
- 2.2 Carbohydrates and lipids
- 2.3 Proteins
- 2.4 Water
- 3.1 Mode of action of enzymes
- 3.2 Factors that affect enzyme action
- 4.1 Fluid mosaic membranes
- 4.2 Movement into and out of cells
- 5.1 Replication and division of nuclei and cells
- 5.2 Chromosome behaviour in mitosis
- 6.1 Structure of nucleic acids and replication of DNA
- 6.2 Protein synthesis
- 7.1 Structure of transport tissues
- 7.2 Transport mechanisms
- 8.1 The circulatory system
- 8.2 Transport of oxygen and carbon dioxide
- 8.3 The heart
- 9.1 The gas exchange system
- 10.1 Infectious diseases
- 10.2 Antibiotics
- 11.1 The immune system
- 11.2 Antibodies and vaccination
- 12.1 Energy
- 12.2 Respiration
- 13.1 Photosynthesis as an energy transfer process
- 13.2 Investigation of limiting factors
- 14.1 Homeostasis in mammals
- 14.2 Homeostasis in plants
- 15.1 Control and coordination in mammals
- 15.2 Control and coordination in plants
- 16.1 Passage of information from parents to offspring
- 16.2 The roles of genes in determining the phenotype
- 16.3 Gene control
- 17.1 Variation
- 17.2 Natural and artificial selection
- 17.3 Evolution
- 18.1 Classification
- 18.2 Biodiversity
- 18.3 Conservation
- 19.1 Principles of genetic technology
- 19.2 Genetic technology applied to medicine
- 19.3 Genetically modified organisms in agriculture
Vocabulary lists
- 1. Cell structure
- 2. Biological molecules
- 3. Enzymes
- 4. Cell membranes and transport
- 5. The mitotic cell cycle
- 6. Nucleic acids and protein synthesis
- 7. Transport in plants
- 8. Transport in mammals
- 9. Gas exchange
- 10. Infectious diseases
- 11. Immunity
- 12. Energy and respiration
- 13. Photosynthesis
- 14. Homeostasis
- 15. Control and coordination
- 16. Inheritance
- 17. Selection and evolution
- 18. Classification, biodiversity and conservation
- 19. Genetic technology
Flashcards
Weekly vocab tests
- Week 1 · Topic 1 · Cell structure
- Week 2 · Topic 1 · Cell structure
- Week 3 · Topics 1–2 · Cell structure, Biological molecules
- Week 4 · Topic 2 · Biological molecules
- Week 5 · Topic 2 · Biological molecules
- Week 6 · Topic 2 · Biological molecules
- Week 7 · Topics 2–3 · Biological molecules, Enzymes
- Week 8 · Topics 3–4 · Enzymes, Cell membranes and transport
- Week 9 · Topic 4 · Cell membranes and transport
- Week 10 · Topics 4–5 · Cell membranes and transport, The mitotic cell cycle
- Week 11 · Topics 5–6 · The mitotic cell cycle, Nucleic acids and protein synthesis
- Week 12 · Topics 6–7 · Nucleic acids and protein synthesis, Transport in plants
- Week 13 · Topic 7 · Transport in plants
- Week 14 · Topics 7–8 · Transport in plants, Transport in mammals
- Week 15 · Topic 8 · Transport in mammals
- Week 16 · Topics 8–9 · Transport in mammals, Gas exchange
- Week 17 · Topics 9–10 · Gas exchange, Infectious diseases
- Week 18 · Topics 10–11 · Infectious diseases, Immunity
- Week 19 · Topics 12–14 · Energy and respiration, Photosynthesis, Homeostasis
- Week 20 · Topics 14–16 · Homeostasis, Control and coordination, Inheritance
- Week 21 · Topics 17–18 · Selection and evolution, Classification, biodiversity and conservation
- Week 22 · Topics 12–19 · Energy and respiration, Classification, biodiversity and conservation, Genetic technology
- Week 23 · Topics 12–13 · Energy and respiration, Photosynthesis
- Week 24 · Topics 13–14 · Photosynthesis, Homeostasis
- Week 25 · Topics 14–15 · Homeostasis, Control and coordination
- Week 26 · Topics 15–16 · Control and coordination, Inheritance
- Week 27 · Topics 16–17 · Inheritance, Selection and evolution
- Week 28 · Topics 17–18 · Selection and evolution, Classification, biodiversity and conservation
- Week 29 · Topics 18–19 · Classification, biodiversity and conservation, Genetic technology
- Week 30 · Topic 19 · Genetic technology
Weekly homework
- Week 1
- Week 4
- Week 8
- Week 11
- Week 14
- Week 17
- Week 20
- Week 23
- Week 26
- Week 28
- Week 31
- Week 34
- Week 37
- Week 40
- Week 43
- Week 45
- Week 48
- Week 51
- Week 54
Exercise sheets
- Complete pack — exercise sheets + past papers
- 1 Cell structure — Part 1
- 1 Cell structure — Part 2
- 2 Biological molecules — Part 1
- 2 Biological molecules — Part 2
- 3 Enzymes — Part 1
- 3 Enzymes — Part 2
- 4 Cell membranes and transport — Part 1
- 4 Cell membranes and transport — Part 2
- 5 The mitotic cell cycle — Part 1
- 5 The mitotic cell cycle — Part 2
- 6 Nucleic acids and protein synthesis — Part 1
- 6 Nucleic acids and protein synthesis — Part 2
- 7 Transport in plants — Part 1
- 7 Transport in plants — Part 2
- 8 Transport in mammals — Part 1
- 8 Transport in mammals — Part 2
- 9 Gas exchange — Part 1
- 9 Gas exchange — Part 2
- 10 Infectious diseases — Part 1
- 10 Infectious diseases — Part 2
- 11 Immunity — Part 1
- 11 Immunity — Part 2
- 12 Energy and respiration — Part 1
- 12 Energy and respiration — Part 2
- 13 Photosynthesis — Part 1
- 13 Photosynthesis — Part 2
- 14 Homeostasis — Part 1
- 14 Homeostasis — Part 2
- 15 Control and coordination — Part 1
- 15 Control and coordination — Part 2
- 16 Inheritance — Part 1
- 16 Inheritance — Part 2
- 17 Selection and evolution — Part 1
- 17 Selection and evolution — Part 2
- 18 Classification, biodiversity and conservation — Part 1
- 18 Classification, biodiversity and conservation — Part 2
- 19 Genetic technology — Part 1
- 19 Genetic technology — Part 2
Past papers
- 1.1 The microscope in cell studies
- 1.2 Cells as the basic units of living organisms
- 2.1 Testing for biological molecules
- 2.2 Carbohydrates and lipids
- 2.3 Proteins
- 3.1 Mode of action of enzymes
- 3.2 Factors that affect enzyme action
- 4.1 Fluid mosaic membranes
- 4.2 Movement into and out of cells
- 5.1 Replication and division of nuclei and cells
- 5.2 Chromosome behaviour in mitosis
- 6.1 Structure of nucleic acids and replication of DNA
- 6.2 Protein synthesis
- 7.1 Structure of transport tissues
- 7.2 Transport mechanisms
- 8.1 The circulatory system
- 8.2 Transport of oxygen and carbon dioxide
- 8.3 The heart
- 9.1 The gas exchange system
- 10.1 Infectious diseases
- 10.2 Antibiotics
- 11.1 The immune system
- 11.2 Antibodies and vaccination
- 12.1 Energy
- 12.2 Respiration
- 13.1 Photosynthesis as an energy transfer process
- 13.2 Investigation of limiting factors
- 14.1 Homeostasis in mammals
- 14.2 Homeostasis in plants
- 15.1 Control and coordination in mammals
- 15.2 Control and coordination in plants
- 16.1 Passage of information from parents to offspring
- 16.2 The roles of genes in determining the phenotype
- 16.3 Gene control
- 17.1 Variation
- 17.2 Natural and artificial selection
- 17.3 Evolution
- 18.1 Classification
- 18.2 Biodiversity
- 18.3 Conservation
- 19.1 Principles of genetic technology
- 19.2 Genetic technology applied to medicine
- 19.3 Genetically modified organisms in agriculture
Example Candidate Responses
- Example Responses Paper 2 (2022)
- Example Responses Paper 3 (2022)
- Example Responses Paper 4 (2022)
- Example Responses Paper 5 (2022)
Syllabus Documents
- Biology 2025-2027 Syllabus Document
- Biology 2028-2030 Syllabus Document
- Biology A Level Grade Descriptions
- Biology Grade Descriptions
Teaching Support
Tips
Mark these like a marker, not like a student. The schemes list separate points, and the gap between "I said roughly that" and "I said the point" is where most marks go. Highlight the exact words in your answer that earn each point — if you cannot find them, you did not earn it.
Collect the command words as you go. Across a few papers the same verbs attach to the same kinds of question, and knowing which one wants a mechanism is worth more than another pass through the content.
The practical papers test experimental reasoning, not recall, so you can attempt them early, before you have finished the content. Doing them alongside the theory also fixes the vocabulary faster, because you have to use it.