BRAINCAKE

Edexcel GCSE Biology

Edexcel Biology (1BI0)9 topics165 lessons

Edexcel GCSE Biology revision for Edexcel Biology (1BI0): 9 topics and 165 short lessons, each with R.E.C.I.P.E. recall steps and a quiz. The topics follow the Edexcel specification.

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1. Key concepts in biology

17 lessons

  1. Sub-cellular structures of eukaryotic and prokaryotic cells
  2. Specialised cells
  3. Microscope technology
  4. Number, size and scale
  5. Units and standard form for cells
  6. Core practical: using a light microscope
  7. Enzyme action, the active site and specificity
  8. Denaturing of enzymes
  9. Temperature, substrate concentration and pH
  10. Core practical: the effect of pH on enzyme activity
  11. Rate calculations for enzyme activity
  12. Enzymes in synthesis and breakdown
  13. Core practical: food tests for starch, reducing sugars, proteins and fats
  14. Measuring the energy in food using calorimetry
  15. Transport into and out of cells: diffusion, osmosis and active transport
  16. Core Practical: Investigate osmosis in potatoes
  17. Calculate percentage gain and loss of mass in osmosis

2. Cells and control

17 lessons

  1. Mitosis and the cell cycle
  2. Importance of mitosis
  3. Daughter cells and chromosomes
  4. Cancer and cell division
  5. Growth in animals and plants
  6. Importance of cell differentiation
  7. Percentile charts and growth
  8. Stem cells and meristems
  9. Benefits and risks of stem cells in medicine
  10. Describe the structures and functions of the brain including the cerebellum, cerebral hemispheres and medulla oblongata
  11. Explain how the difficulties of accessing brain tissue inside the skull can be overcome by using CT scanning and PET scanning to investigate brain function
  12. Explain some of the limitations in treating damage and disease in the brain and other parts of the nervous system, including spinal injuries and brain tumours
  13. Neurones, synapses and nerve impulses
  14. The reflex arc
  15. Structure and function of the eye
  16. Defects of the eye
  17. Correcting eye defects

3. Genetics

23 lessons

  1. Advantages and disadvantages of asexual reproduction
  2. Advantages and disadvantages of sexual reproduction
  3. Meiosis and the production of gametes
  4. The structure of DNA
  5. The genome and genes
  6. Extracting DNA from fruit, and how bases code for proteins
  7. From DNA bases to protein shape
  8. Protein synthesis: transcription and translation
  9. Variants in non-coding DNA
  10. Variants in coding DNA
  11. Mendel and the discovery of inheritance
  12. Alleles and inherited differences
  13. Key terms in genetics
  14. Monohybrid inheritance, Punnett squares and pedigrees
  15. Sex determination at fertilisation
  16. Calculating outcomes of monohybrid crosses
  17. Inheritance of the ABO blood groups
  18. Inheritance of sex-linked genetic disorders
  19. Multiple genes and phenotype
  20. Genetic variation and phenotype
  21. The Human Genome Project
  22. Genetic variation and mutations
  23. Effects of mutations on the phenotype

4. Natural selection and genetic modification

14 lessons

  1. Charles Darwin, Alfred Wallace and the theory of evolution
  2. Darwin's theory of evolution by natural selection
  3. Resistant organisms and natural selection
  4. Evidence for human evolution from fossils
  5. Evidence for human evolution from stone tools
  6. The pentadactyl limb as evidence for evolution
  7. Three domains and five kingdoms
  8. Selective breeding and tissue culture
  9. Tissue culture
  10. Genetic engineering
  11. Stages of genetic engineering and GM organisms
  12. Advantages and disadvantages of genetic engineering
  13. Agricultural solutions for a growing population
  14. Benefits and risks of genetic engineering and selective breeding

5. Health, disease and the development of medicines

25 lessons

  1. Health and the WHO definition
  2. Communicable and non-communicable diseases
  3. One disease leading to another
  4. Pathogens
  5. Common infections
  6. Spread and prevention of infections
  7. Lifecycle of a virus: lytic and lysogenic pathways
  8. Sexually transmitted infections: chlamydia and HIV
  9. Plant defences: physical barriers
  10. Plant defences: chemicals and medicines
  11. Detecting and identifying plant disease
  12. Physical barriers and chemical defences
  13. The specific immune response
  14. Immunisation, herd immunity and its pros and cons
  15. Advantages and disadvantages of immunisation
  16. Antibiotics and aseptic technique
  17. Aseptic techniques in culturing microorganisms
  18. Core practical: effects of antiseptics, antibiotics and plant extracts on microbial cultures
  19. Cross-sectional areas of bacterial cultures and clear agar jelly
  20. Developing new medicines
  21. Production of monoclonal antibodies
  22. Uses of monoclonal antibodies
  23. Causes of non-communicable diseases
  24. Lifestyle factors and non-communicable diseases
  25. Treatments for cardiovascular disease

6. Plant structures and their functions

16 lessons

  1. Photosynthetic organisms as producers of food and biomass
  2. Photosynthesis as an endothermic reaction
  3. Limiting factors on the rate of photosynthesis
  4. Interactions of limiting factors in photosynthesis
  5. Core practical: light intensity and the rate of photosynthesis
  6. Light intensity, distance and the inverse square law
  7. Root hair cells
  8. Xylem and phloem
  9. Transpiration and stomata
  10. Translocation of sucrose
  11. Leaf structure: adaptations for photosynthesis and gas exchange
  12. Factors affecting water uptake
  13. Transpiration rate calculations
  14. Plant adaptations to extreme environments
  15. Plant hormones, auxins, phototropism and gravitropism
  16. Commercial uses of auxins, gibberellins and ethene

7. Animal coordination, control and homeostasis

22 lessons

  1. Hormones and endocrine glands
  2. Adrenalin and fight or flight
  3. Thyroxine and negative feedback
  4. The menstrual cycle
  5. Hormone interactions in the menstrual cycle
  6. Hormonal contraception
  7. Evaluate hormonal and barrier methods of contraception
  8. Hormones in Assisted Reproductive Technology
  9. Homeostasis and the constant internal environment
  10. The importance of homeostasis
  11. Thermoregulation and the skin
  12. Shivering, vasoconstriction and vasodilation
  13. Insulin and blood glucose concentration
  14. Glucagon and blood glucose concentration
  15. Type 1 diabetes: cause and control
  16. Type 2 diabetes
  17. Body mass, BMI and type 2 diabetes
  18. Structure of the urinary system
  19. Structure of the nephron and filtration
  20. ADH and the collecting duct
  21. Treating kidney failure
  22. Urea production in the liver

8. Exchange and transport in animals

12 lessons

  1. Why substances must be transported
  2. Exchange surfaces and transport systems
  3. Alveoli and the rate of diffusion
  4. Factors affecting the rate of diffusion
  5. Calculating the rate of diffusion using Fick's law
  6. The structure and function of blood
  7. Arteries, veins and capillaries
  8. The heart and the circulatory system
  9. Cellular respiration
  10. Aerobic and anaerobic respiration compared
  11. Core practical: rate of respiration
  12. Heart rate, stroke volume and cardiac output

9. Ecosystems and material cycles

19 lessons

  1. Levels of organisation in an ecosystem
  2. Abiotic and biotic factors affecting communities
  3. Interdependence in a community
  4. Parasitism and mutualism
  5. Core practical: fieldwork with quadrats and belt transects
  6. Estimating population size from quadrat data
  7. Energy transfer and trophic levels
  8. Efficiency of energy transfer and percentage biomass
  9. Human interactions: fish farming and non-indigenous species
  10. Benefits of maintaining biodiversity
  11. Biological factors affecting food security
  12. How materials cycle in an ecosystem
  13. The carbon cycle
  14. The water cycle and potable water
  15. Nitrates and the nitrogen cycle
  16. Indicator species and pollution
  17. Decomposition and food preservation
  18. Decomposition and composting
  19. Calculate rate changes in the decay of biological material