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Unit 11. Chemistry of Life7 lessonsUnit 22. Cells12 lessonsUnit 33. Cellular Energetics5 lessonsUnit 44. Cell Communication and Cell Cycle6 lessonsUnit 55. Heredity5 lessonsUnit 66. Gene Expression and Regulation9 lessonsUnit 77. Natural Selection13 lessonsUnit 88. Ecology8 lessonsUnit 9AP Biology - Plants and Human Body Systems15 lessonsUnit 10AP Biology - Laboratory review3 lessonsUnit 11AP Biology - Diagnostic exam0 lessonsUnit 12AP Biology - Practice Test 10 lessonsUnit 13AP Biology - Practice Test 20 lessons
✅ 100% free📱 Phone & laptop🧠 Short, clear lessons🎯 Instant feedback🧪 Virtual lab📈 Progress you can see👪 Easy for parents to follow📝 Exam-style practice✅ 100% free📱 Phone & laptop🧠 Short, clear lessons🎯 Instant feedback🧪 Virtual lab📈 Progress you can see👪 Easy for parents to follow📝 Exam-style practice
1

Chemistry of Life

7 lessons
  1. 1.1Structure of Water and Hydrogen BondingFree preview5 minStudy
  2. Structure of Water and Hydrogen Bonding - Check yourselfStructure of Water and Hydrogen Bonding — Lesson quiz
  3. 1.2Elements of Life5 minStudy
  4. Elements of Life - Check yourselfUnit 1 · Chemistry of Life - Unit review
  5. 1.3Introduction to Macromolecules5 minStudy
  6. Monomers and Covalent Bonds – Exam questionsBuilding Biological Molecules – Unit exam questionsIntroduction to Macromolecules - Check yourself
  7. 1.4Carbohydrates5 minStudy
  8. Carbohydrates - Check yourself
  9. 1.5Lipids5 minStudy
  10. Lipids - Check yourself
  11. 1.6Nucleic Acids5 minStudy
  12. Nucleic Acids - Check yourself
  13. 1.7Proteins5 minStudy
  14. AP Biology Chapter 5 - Chemistry - Question bankProteins - Check yourself
  15. Unit practiceWater & Carbon: The Chemistry of Life (AP Biology) - Check …Water & Chemical Elements - Check yourself
2

Cells

12 lessons
  1. 2.12. Cells12 minStudy
  2. AP Biology Chapter 6 - Cells - Question bankAP Biology Unit 2 - CellsUnit 2 · Cells - Unit review
  3. 2.2Cell Structure and Function5 minStudy
  4. Comparing Prokaryotic and Eukaryotic Cells – Exam questionsCell Structure and Function - Check yourselfCell Structure and Function — Lesson quizCell Structure and Function — Image-based organelle quiz
  5. 2.3Cell Size5 minStudy
  6. Cells and Surface Area – Exam questionsCell Size - Check yourself
  7. 2.4Cell Membranes & Transport12 minStudy
  8. Cell Membranes & Transport - Check yourself
  9. 2.5Plasma Membrane5 minStudy
  10. Plasma Membrane - Check yourself
  11. 2.6Membrane Permeability5 minStudy
  12. Membrane Permeability - Check yourself
  13. 2.7Membrane Transport5 minStudy
  14. Membrane Transport - Check yourself
  15. 2.8Facilitated Diffusion5 minStudy
  16. Facilitated Diffusion - Check yourself
  17. 2.9Tonicity and Osmoregulation5 minStudy
  18. Tonicity and Osmoregulation - Check yourself
  19. 2.10Mechanisms of Transport5 minStudy
  20. Mechanisms of Transport - Check yourself
  21. 2.11Cell Compartmentalization5 minStudy
  22. Compartmentalization in Eukaryotic Cells – Exam questionsCell Compartmentalization - Check yourself
  23. 2.12Origins of Cell Compartmentalization5 minStudy
  24. Compartmentalisation & the Origin of Cells (AP Biology) - C…Origins of Cell Compartmentalization - Check yourself
  25. Unit practiceExocytosis and Endocytosis – Unit exam questions
3

Cellular Energetics

5 lessons
  1. 3.1Enzymes5 minStudy
  2. Enzymes - Check yourselfEnzymes — Feedback inhibition practice
  3. 3.2Environmental Impacts on Enzyme Function5 minStudy
  4. Factors Affecting Enzyme Activity – Exam questionsEnvironmental Impacts on Enzyme Function - Check yourself
  5. 3.3Cellular Energy5 minStudy
  6. Energy in Organisms – Exam questionsCellular Energy - Check yourself
  7. 3.4Photosynthesis5 minStudy
  8. AP Biology Chapter 8 - Photosynthesis - Question bankPhotosynthesis — IGCSE Biology supplementary practice for A…The Light-Independent Reactions of Photosynthesis – Exam qu…The Light-Dependent Reactions of Photosynthesis – Exam ques…Photosynthesis - Check yourself
  9. 3.5Cellular Respiration5 minStudy
  10. AP Biology Chapter 7 - Respiration - Question bankRespiration — IGCSE Biology supplementary practice for AP U…Fermentation – Exam questionsThe Electron Transport Chain – Exam questionsCellular Respiration - Check yourself
  11. Unit practiceEnergy from Biological Molecules – Exam questionsUnit 3 · Cellular Energetics - Unit review
4

Cell Communication and Cell Cycle

6 lessons
  1. 4.1Cell Communication5 minStudy
  2. Cell Communication - Check yourselfCell Communication — Lesson quizUnit 4 · Cell Communication and Cell Cycle - Unit review
  3. 4.2Introduction to Signal Transduction5 minStudy
  4. Introduction to Signal Transduction - Check yourself
  5. 4.3Signal Transduction Pathways5 minStudy
  6. Signal Transduction Pathways - Check yourself
  7. 4.4Feedback5 minStudy
  8. Positive and Negative Feedback – Exam questionsFeedback - Check yourself
  9. 4.5Cell Cycle5 minStudy
  10. Cell Cycle - Check yourself
  11. 4.6Regulation of Cell Cycle5 minStudy
  12. AP Biology Chapter 9 - Cell Division - Question bankRegulation of Cell Cycle - Check yourself
  13. Unit practiceCell Signalling (AP Biology) - Check yourself
5

Heredity

5 lessons
  1. 5.1Meiosis5 minStudy
  2. Meiosis - Check yourselfMeiosis — IGCSE Biology supplementary practice for AP Unit 5
  3. 5.2Meiosis and Genetic Diversity5 minStudy
  4. Meiosis and Genetic Diversity - Check yourself
  5. 5.3Mendelian Genetics5 minStudy
  6. Mendelian Genetics - Check yourself
  7. 5.4Non-Mendelian Genetics5 minStudy
  8. Non-Mendelian Genetics - Check yourself
  9. 5.5Environmental Effects on Phenotype5 minStudy
  10. Environmental Effects on Phenotype - Check yourself
  11. Unit practiceChromosomal Inheritance & Pedigrees (AP Biology) - Check yo…Unit 5 · Heredity - Question bank
6

Gene Expression and Regulation

9 lessons
  1. 6.16. Gene Expression and Regulation12 minStudy
  2. Unit 6 · Gene Expression and Regulation - Unit review
  3. 6.2DNA and RNA Structure5 minStudy
  4. DNA and RNA Structure - Check yourselfDNA and RNA Structure — Lesson quiz
  5. 6.3DNA Replication5 minStudy
  6. DNA Replication - Check yourself
  7. 6.4Transcription and RNA Processing5 minStudy
  8. Transcription and RNA Processing - Check yourself
  9. 6.5Translation5 minStudy
  10. Translation - Check yourself
  11. 6.6Regulation of Gene Expression5 minStudy
  12. Regulating Gene Expression - Check yourselfRegulation of Gene Expression - Check yourself
  13. 6.7Gene Expression and Cell Specialization5 minStudy
  14. Gene Expression and Cell Specialization - Check yourself
  15. 6.8Mutations5 minStudy
  16. Mutations - Check yourself
  17. 6.9Biotechnology5 minStudy
  18. Biotechnology — IGCSE Biology supplementary practice for AP…DNA Sequencing – Exam questionsBacterial Transformation – Unit exam questionsThe Polymerase Chain Reaction (PCR) – Exam questionsGel Electrophoresis – Exam questionsAP Biology Chapter 11 - Molecular Genetics - Question bankAP Biology Unit 6 - Gene Expression and RegulationBiotechnology - Check yourself
  19. Unit practiceGenetic Information In Retroviruses – Exam questions
7

Natural Selection

13 lessons
  1. 7.1Introduction to Natural Selection5 minStudy
  2. Introduction to Natural Selection - Check yourselfIntroduction to Natural Selection — Lesson quiz
  3. 7.2Natural Selection5 minStudy
  4. Natural Selection — Mixed-source topical practiceNatural Selection - Check yourself
  5. 7.3Artificial Selection5 minStudy
  6. Artificial Selection - Check yourself
  7. 7.4Population Genetics5 minStudy
  8. Population Genetics — Genetic drift, gene flow and variationPopulation Genetics - Check yourself
  9. 7.5Origin of Life & Extinction12 minStudy
  10. Origin of Life & Extinction (AP Biology) - Check yourself
  11. 7.6Hardy-Weinberg Equilibrium5 minStudy
  12. Hardy-Weinberg Equilibrium - Check yourself
  13. 7.7Evidence of Evolution5 minStudy
  14. Evidence of Evolution - Check yourselfUnit 7 · Evolution - Question bank
  15. 7.8Common Ancestry5 minStudy
  16. Common Ancestry - Check yourself
  17. 7.9Continuing Evolution5 minStudy
  18. Continuing Evolution - Check yourself
  19. 7.10Phylogeny5 minStudy
  20. AP Biology Chapter 13 - Taxonomy and Classification - Quest…Phylogeny - Check yourself
  21. 7.11Speciation5 minStudy
  22. Speciation - Check yourself
  23. 7.12Variations in Populations5 minStudy
  24. Variation in Populations – Exam questionsVariations in Populations - Check yourself
  25. 7.13Origins of Life on Earth5 minStudy
  26. Origins of Life on Earth - Check yourself
8

Ecology

8 lessons
  1. 8.18. Ecology12 minStudy
  2. 8.2Responses to the Environment5 minStudy
  3. AP Biology Chapter 17 - Behavioral Ecology - Question bankResponses to the Environment - Check yourselfResponses to the Environment — Lesson quiz
  4. 8.3Energy Flow Through Ecosystems5 minStudy
  5. Energy Flow Through Ecosystems - Check yourself
  6. 8.4Population Ecology5 minStudy
  7. Population Ecology - Check yourself
  8. 8.5Effect of Density on Populations5 minStudy
  9. Effect of Density on Populations - Check yourself
  10. 8.6Community Ecology5 minStudy
  11. Community Ecology - Check yourself
  12. 8.7Biodiversity5 minStudy
  13. Biodiversity - Check yourself
  14. 8.8Disruptions in Ecosystems5 minStudy
  15. Disruption to Ecosystems – Exam questionsDisruptions in Ecosystems - Check yourself
  16. Unit practiceUnit 8 · Ecology in Further Detail - Question bank
9

Plants and Human Body Systems

15 lessons
  1. 9.1AP Biology Chapter 14 — Plants: Structure, Transport and Hormones12 minStudy
  2. AP Biology Chapter 14 — Plants: Structure, Transport and Ho…
  3. 9.2AP Biology Chapter 15 — Human Physiology12 minStudy
  4. AP Biology Chapter 15 - Human Physiology - Question bank
  5. 9.3AP Biology Chapter 16 — Human Reproduction and Development12 minStudy
  6. AP Biology Chapter 16 - Human Reproduction - Question bank
  7. 9.4OpenStax Biology for AP — Chapter 23: Plant Form and Physiology12 minStudy
  8. 9.5OpenStax Biology for AP — Chapter 24: The Animal Body: Basic Form and Function12 minStudy
  9. 9.6OpenStax Biology for AP — Chapter 25: Animal Nutrition and the Digestive System12 minStudy
  10. 9.7OpenStax Biology for AP — Chapter 26: The Nervous System12 minStudy
  11. 9.8OpenStax Biology for AP — Chapter 27: Sensory Systems12 minStudy
  12. 9.9OpenStax Biology for AP — Chapter 28: The Endocrine System12 minStudy
  13. 9.10OpenStax Biology for AP — Chapter 29: The Musculoskeletal System12 minStudy
  14. 9.11OpenStax Biology for AP — Chapter 30: The Respiratory System12 minStudy
  15. 9.12OpenStax Biology for AP — Chapter 31: The Circulatory System12 minStudy
  16. 9.13OpenStax Biology for AP — Chapter 32: Osmotic Regulation and Excretion12 minStudy
  17. 9.14OpenStax Biology for AP — Chapter 33: The Immune System12 minStudy
  18. 9.15OpenStax Biology for AP — Chapter 34: Animal Reproduction and Development12 minStudy
  19. Unit practiceAP Biology Chapter 14 - Plants - Question bank
10

Laboratory review

3 lessons
  1. 10.1AP Biology Chapter 19 — Laboratory Review12 minStudy
  2. AP Biology Chapter 19 - Laboratory Review - Question bank
  3. 10.2OpenStax Biology for AP — Preface and Contents12 minStudy
  4. 10.3OpenStax Biology for AP — Appendixes and Reference Tables12 minStudy
11

Diagnostic exam

1 quiz
12

Practice Test 1

1 quiz
13

Practice Test 2

1 quiz