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A level Biology exam revision resources written by A level Examiners

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	1. Study Room - Biology - Genes and Genetics - The cell cycle - Explanation of Genes and Genetics, The cell cycle. (Resource Type: Study Room / Relevance Score : 7.52)

	2. ScienceNet - Cell Biology FAQs - ScienceNet provides a database of frequently asked questions in relation to Cell Biology. There's also the option of asking a question, if you can't find what your looking for. (Resource Type: Link / Relevance Score : 5.87)

	3. Study Room - Biology - Biochemistry and Cells - Cell Structure - Explanation of Biochemistry and Cells, Cell Structure. (Resource Type: Study Room / Relevance Score : 5.42)

	4. Study Room - Chemistry - Thermodynamics - The Four Types of Reaction - Thermodynamics - The Four Types of Reaction (Resource Type: Study Room / Relevance Score : 4.96)

	5. Study Room - Biology - Biochemistry and Cells - Cell Fractionation - Explanation of Biochemistry and Cells, Cell Fractionation. (Resource Type: Study Room / Relevance Score : 4.95)

	6. Study Room - Chemistry - Redox reactions - Cell conventions - Explanation of redox reactions. (Resource Type: Study Room / Relevance Score : 4.43)

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7. Chromosome 11 - Genetic Simulation - At the moment, genetic counsellors can find out what diseases babies might be at risk from by investigating the family trees of the parents, as well as by conducting DNA tests. And in the future, we might well be consulting genetic counsellors just as often as we visit our doctors today.

In this activity you play the role of a genetic counsellor. Your task is to investigate the family tree of a set of parents and search for the sickle cell anaemia gene, which is located on Chromosome 11. Don't worry if you don't know much about genetics or sickle cell yet - the thought bubble at the top of the page will give you step by step instructions and you will have constant access to a medical reference book. (Resource Type: Link / Relevance Score : 4.29)

	8. Study Room - Biology - Genes and Genetics - The genetic code and protein synthesis - Explanation of Genes and Genetics, The genetic code and protein synthesis. (Resource Type: Study Room / Relevance Score : 4.23)

	9. Study Room - Chemistry - Extraction of metals - Aluminium - The Extraction of aluminium from its ores (Resource Type: Study Room / Relevance Score : 4.14)

	10. Study Room - Biology - Organs and Systems - Xylem and Phloem Structure - Explanation of Organs and Systems, Xylem and Phloem Structure. (Resource Type: Study Room / Relevance Score : 3.93)

	11. Study Room - Chemistry - Redox reactions - The standard hydrogen electrode - Explanation of redox reactions. (Resource Type: Study Room / Relevance Score : 3.86)

	12. GCSE, AQA, Higher (Spec B), June 2003 - Cell Structure based question (Resource Type: ExamGCSE / Relevance Score : 3.80)

	13. Study Room - Biology - Genes and Genetics - Mitosis - Explanation of Genes and Genetics, Mitosis. (Resource Type: Study Room / Relevance Score : 3.74)

	14. Study Room - Biology - Biochemistry and Cells - Movement across membranes - Explanation of Biochemistry and Cells, Movement across membranes. (Resource Type: Study Room / Relevance Score : 3.58)

	15. Types of Hadrons - Page detailing types of Hadrons - Mesons and Baryons. (Resource Type: Link / Relevance Score : 3.58)

	16. Study Room - Chemistry - Thermodynamics - The Four Types of Reaction, Reactions which are always Feasible - Thermodynamics - The Four Types of Reaction, Reactions which are always Feasible (Resource Type: Study Room / Relevance Score : 3.51)

	17. Study Room - Biology - Biochemistry and Cells - Prokaryotic - Explanation of Biochemistry and Cells, Prokaryotic. (Resource Type: Study Room / Relevance Score : 3.51)

	18. Study Room - Biology - Genes and Genetics - Meiosis - Explanation of Genes and Genetics, Meiosis. (Resource Type: Study Room / Relevance Score : 3.43)

	19. Study Room - Chemistry - Thermodynamics - The Four Types of Reaction, Reactions which are never Feasible - Thermodynamics - The Four Types of Reaction, Reactions which are never Feasible (Resource Type: Study Room / Relevance Score : 3.43)

	20. GCSE, AQA, Higher (Spec B), June 2003 - Inheritance based question (Resource Type: ExamGCSE / Relevance Score : 3.31)

	21. Study Room - Biology - Physiology - Nervous Communication, Nerve Cells - Explanation of Physiology, Nervous Communication- Nerve Cells. (Resource Type: Study Room / Relevance Score : 3.01)

	22. Study Room - Biology - Biochemistry and Cells - Eukaryotic - Explanation of Biochemistry and Cells, Eukaryotic. (Resource Type: Study Room / Relevance Score : 3.01)

	23. Study Room - Biology - Biochemistry and Cells - Cell Techniques - Explanation of Biochemistry and Cells, Cell Techniques. (Resource Type: Study Room / Relevance Score : 2.74)

	24. Study Room - Biology - Genes and Genetics - Nucleic acids - Nucleotides - Explanation of Genes and Genetics, Nucleic acids, Nucleotides. (Resource Type: Study Room / Relevance Score : 2.69)

	25. Study Room - Chemistry - Thermodynamics - The Four Types of Reaction, Reactions that are sometimes Feasible have DeltaG = 0 at some Temperature - Thermodynamics - The Four Types of Reaction, Reactions that are sometimes Feasible have DeltaG = 0 at some Temperature (Resource Type: Study Room / Relevance Score : 2.62)

	26. Study Room - Biology - Organs and Systems - Water and Mineral Ion Transport - Explanation of Organs and Systems, Water and Mineral Ion. (Resource Type: Study Room / Relevance Score : 2.62)

	27. Study Room - Biology - Genes and Genetics - From one generation to the next - Explanation of Genes and Genetics, From one generation to the next. (Resource Type: Study Room / Relevance Score : 2.61)

	28. Study Room - Biology - Genes and Genetics - Nucleic acids - DNA Replication - Explanation of Nucleic acids, DNA Replication. (Resource Type: Study Room / Relevance Score : 2.58)

	29. GCSE, AQA, Higher (Spec B), June 2003 - Inheritance based question (Resource Type: ExamGCSE / Relevance Score : 2.47)

	30. Study Room - Chemistry - Functional Groups and Isomerism - Homologous Series - Carbonyls - Functional Groups and Isomerism (Resource Type: Study Room / Relevance Score : 2.38)

	31. Study Room - Biology - Organs and Systems - Transport in Plants - Explanation of Organs and Systems, Transport in Plants. (Resource Type: Study Room / Relevance Score : 2.35)

	32. Study Room - Physics - Momentum and energy - The collision of two particles in one dimension - Explanation of The collision of two particles in one dimension (Resource Type: Study Room / Relevance Score : 2.35)

	33. Study Room - Biology - Behaviour, Reproduction and Health - Human Reproduction - Explanation of Behaviour, Reproduction and Health, Human Reproduction,. (Resource Type: Study Room / Relevance Score : 2.32)

	34. Study Room - Biology - Organs and Systems - Circulation - The heart - Explanation of Organs and Systmes, Circulation, The heart. (Resource Type: Study Room / Relevance Score : 2.27)

	35. Study Room - Physics - Waves and oscillations - Lens types - Explanation of Lens types (Resource Type: Study Room / Relevance Score : 2.26)

	36. Equations and Stoichiometry - Intended to help the chemistry student learn the basics of writing and balancingequations, how to predict the products of four general types of inorganic reactions and how to write and balanceequations for the combustion of hydrocarbons. There are also practice exercises for each section. (Resource Type: Link / Relevance Score : 2.22)

	37. Study Room - Chemistry - Extraction of metals - The Reactions - The Extraction of aluminium from its ores (Resource Type: Study Room / Relevance Score : 2.19)

	38. Study Room - Biology - Energetics - Respiration - Explanation of Energetics, Respiration. (Resource Type: Study Room / Relevance Score : 2.14)

	39. How Your Brain Works - This site includes an information on How Your Brain Works, Neuron Structure, Basic Neuron Types, Brain Parts.... (Resource Type: Link / Relevance Score : 2.11)

	40. GCSE, AQA, Higher (Spec B), June 2003 - Digestion based question (Resource Type: ExamGCSE / Relevance Score : 1.99)

	41. Study Room - Biology - Biochemistry and Cells - Electron Microscopy - Explanation of Biochemistry and Cells, Electron Microscopy. (Resource Type: Study Room / Relevance Score : 1.96)

	42. Study Room - Biology - Biochemistry and Cells - Proteins - Explanation of Biochemistry and Cells, Proteins. (Resource Type: Study Room / Relevance Score : 1.95)

	43. Study Room - Biology - Genes and Genetics - Protein synthesis - Explanation of Genes and Genetics, Protein synthesis. (Resource Type: Study Room / Relevance Score : 1.92)

	44. Hadrons table - Table of properties of two types of Hadrons - Baryons and Mesons. (Resource Type: Link / Relevance Score : 1.91)

	45. GCSE, AQA, Higher (Spec B), June 2003 - Reproduction in plants based question (Resource Type: ExamGCSE / Relevance Score : 1.84)

	46. Study Room - Biology - Energetics - Page 2 - Explanation of Energetics, Page 2. (Resource Type: Study Room / Relevance Score : 1.83)

	47. Study Room - Physics - Quantum physics - Radioactivity - Explanation of Radioactivity (Resource Type: Study Room / Relevance Score : 1.83)

	48. Study Room - Chemistry - Functional groups and isomerism in organic chemistry - Explanation of functional groups and isomerism in organic chemistry. (Resource Type: Study Room / Relevance Score : 1.82)

	49. Study Room - Biology - Biochemistry and Cells - Differences between Prokaryotic and Eukaryotic Cells - Explanation of Biochemistry and Cells, Differences between Prokaryotic and Eukaryotic Cells. (Resource Type: Study Room / Relevance Score : 1.81)

	50. Study Room - Biology - Biochemistry and Cells - Introduction - Explanation of Biochemistry and Cells, Introduction. (Resource Type: Study Room / Relevance Score : 1.77)

	51. Study Room - Biology - Behaviour, Reproduction and Health - Behaviour - Innate Behaviours - Explanation of Behaviour, Reproduction and Health, Behaviour, Innate Behaviours. (Resource Type: Study Room / Relevance Score : 1.75)

	52. Study Room - Biology - Biochemistry and Cells - Polysaccharides - Explanation of Biochemistry and Cells, Polysaccharides. (Resource Type: Study Room / Relevance Score : 1.72)

	53. Study Room - Chemistry - The Alkanes, Alkenes and Benzene - Alkanes - Explanation alkanes and their reactions. (Resource Type: Study Room / Relevance Score : 1.71)

	54. GCSE, AQA, Higher (Spec A), June 2003 - Earth based question (Resource Type: EXamGCSE / Relevance Score : 1.69)

	55. GCSE, AQA, Higher (Spec A), June 2003 - Seismic waves based question (Resource Type: ExamGCSE / Relevance Score : 1.64)

	56. Study Room - Chemistry - Functional Groups and Isomerism - Homologous Series - Introduction - Functional Groups and Isomerism (Resource Type: Study Room / Relevance Score : 1.62)

	57. Study Room - Biology - Behaviour, Reproduction and Health - Behaviour - Explanation of Behaviour, Reproduction and Health, Behaviour. (Resource Type: Study Room / Relevance Score : 1.62)

	58. Study Room - Biology - Genes and Genetics - Cystic Fibrosis - Explanation of Genes and Genetics, Cystic Fibrosis. (Resource Type: Study Room / Relevance Score : 1.59)

	59. Study Room - Biology - Biochemistry and Cells - Light Microscopy - Explanation of Biochemistry and Cells, Light Microscopy. (Resource Type: Study Room / Relevance Score : 1.56)

	60. Study Room - Chemistry - Kinetics - Factors affecting the Rate of Chemical Reactions - Catalysis - Factors affecting the Rate of Chemical Reactions, Catalysis (Resource Type: Study Room / Relevance Score : 1.56)

	61. Study Room - Physics - Waves and oscillations - Waves - Explanation of Waves (Resource Type: Study Room / Relevance Score : 1.53)

	62. Study Room - Biology - Genes and Genetics - Inheritance - Explanation of Genes and Genetics, Inheritance. (Resource Type: Study Room / Relevance Score : 1.52)

	63. Study Room - Biology - Organs and Systems - Gas Exchange in Mammals - Exchange in mammals - Explanation of Organs and Systmes, Gas Exchange in Mammals, Exchange in mammals. (Resource Type: Study Room / Relevance Score : 1.43)

	64. Study Room - Biology - Organs and Systems - Circulation - Blood Vessels - Explanation of Organs and Systmes, Circulation, Blood Vessels. (Resource Type: Study Room / Relevance Score : 1.37)

	65. Study Room - Biology - Behaviour, Reproduction and Health - Human Reproduction, Contraception - Explanation of Behaviour, Reproduction and Health, Human Reproduction - Contraception. (Resource Type: Study Room / Relevance Score : 1.31)

	66. Study Room - Biology - Biochemistry and Cells - The Plasma Membrane - Explanation of Biochemistry and Cells, Plasma Membrane. (Resource Type: Study Room / Relevance Score : 1.30)

	67. Study Room - Biology - Genes and Genetics - Selection - Speciation - Explanation of Genes and Genetics, Selection, Speciation. (Resource Type: Study Room / Relevance Score : 1.29)

	68. Study Room - Biology - Genes and Genetics -Nucleic acids - Ribonucleic acid - Explanation of Nucleic acids, Ribonucleic acid. (Resource Type: Study Room / Relevance Score : 1.24)

	69. Study Room - Biology - Biochemistry and Cells - Inhibition - Explanation of Biochemistry and Cells, Inhibition. (Resource Type: Study Room / Relevance Score : 1.23)

	70. Study Room - Chemistry - Basic Calculations - Titrations - Titrations (Resource Type: Study Room / Relevance Score : 1.22)

	71. Study Room - Chemistry - Atomic structure - Atomic structure - Explanation of Atomic structure, Atomic structure. (Resource Type: Study Room / Relevance Score : 1.20)

	72. Study Room - Physics - Quantum physics - Electromagnetic waves - Explanation of Electromagnetic waves (Resource Type: Study Room / Relevance Score : 1.19)

	73. Study Room - Chemistry - Functional groups and isomerism in organic chemistry - Explanation of functional groups and isomerism in organic chemistry. (Resource Type: Study Room / Relevance Score : 1.17)

	74. Study Room - Physics - Momentum and energy - Temperature - Practical scales of temperature - Explanation of Temperature. practical scales of temperature (Resource Type: Study Room / Relevance Score : 1.15)

	75. Study Room - Biology - Organs and Systems - Transport of Sugars - Explanation of Organs and Systems, Transport of Sugars. (Resource Type: Study Room / Relevance Score : 1.15)

	76. Study Room - Chemistry - Redox reactions - Using standard electrode potentials - Explanation of redox reactions. (Resource Type: Study Room / Relevance Score : 1.14)

	77. Study Room - Biology - Organs and Systems - The Small Intestine - Explanation of Organs and Systmes, The Small Intestine. (Resource Type: Study Room / Relevance Score : 0.96)

	78. Study Room - Physics - Waves and oscillations - Energy in simple harmonic motion - Decay of simple harmonic motion and damping - Explanation of Energy in simple harmonic motion, (Resource Type: Study Room / Relevance Score : 0.91)

	79. Study Room - Biology - Behaviour, Reproduction and Health - Human Growth and Ageing, Ageing - Explanation of Behaviour, Reproduction and Health, Human Growth and Ageing, Ageing. (Resource Type: Study Room / Relevance Score : 0.88)

	80. Study Room - Physics - Mechanics - Projectile Motion - Explanation of Projectile Motion (Resource Type: Study Room / Relevance Score : 0.79)

	81. Study Room - Physics - Quantum physics - Mass and energy - Explanation of Mass and energy (Resource Type: Study Room / Relevance Score : 0.68)

	82. Study Room - Physics - Quantum physics - The photoelectric effect and photons - Explanation of The photoelectric effect and photons (Resource Type: Study Room / Relevance Score : 0.66)

	83. Study Room - Physics - Electricity - Current and potential difference - Explanation of Current and potential difference (Resource Type: Study Room / Relevance Score : 0.61)

	84. Study Room - Physics - Quantum physics - Wave�particle duality - Explanation of Wave�particle duality (Resource Type: Study Room / Relevance Score : 0.49)

	85. Study Room - Physics - Quantum physics - Elementary particles - Explanation of Elementary particles (Resource Type: Study Room / Relevance Score : 0.46)