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OCR GCSE Biology B1 Gateway - concept maps and summaries
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OCR GCSE Biology B1 Gateway - concept maps and summaries

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OCR GCSE Biology B1 Gateway - concept maps and summaries

OCR GCSE Biology B1 Gateway - concept maps and summaries

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OCR GCSE Biology B1 Gateway - concept maps and summaries OCR GCSE Biology B1 Gateway - concept maps and summaries Presentation Transcript

  • B1.1 Fitness and health
  • B1.2 Health and diet
  • B1.3 Preventing diseases
  • B1.4 Infectious diseases
  • B1.6 The eye
  • B1.7 The nervous system
  • B1.8 Drugs
  • B1.9 Tobacco and alcohol
  • B1.1 0 Controlling body temperature
  • B1.11 Controlling blood glucose levels
  • B1.12 Controlling plant growth
  • B1.16 Variation
  • Alleles Genetic variation Gametes Caused by Male and female sex cells are Different versions of the cells DNA code are B1.14 Genetic variation Contain only 23 chromosomes and all are different 1. Gamete formation – splitting of the male and female cell in gamete formation leads to random different sex cells. 2. Fertilisation – when gametes combine during fertilisation the 23 chromosomes from the male and female randomly form the 46 chromosomes of the new baby 3.Mutations – spontaneous incorrect division of DNA OR environmental factors such as aggressive chemical attack, UV, X rays or gamma rays on cells
  • B1.15 Human characteristics
  • B1.16 Inherited disorders
  • B1.16 Inherited disorders