This section shows links to revision materials Biology B3 and B4 (Additional Science) for the OCR Gateway Science exam - J262

B3 - Living and growing

• Molecules of life
  • DNA chromosomes and cells
  • Plant Cells and Animal cells
• Proteins and mutations
  • Proteins and types of Protein
  • Enzymes
  • Mutations
• Respiration
• Cell division
• The circulatory system
  • The Heart
  • Blood circulation
• Growth and development
  • Plant Cells
  • Specialised Cells
• Genetic Engineering
• Cloning

B4 - It's a green world

• Ecology in the local environment
• Photosynthesis
• Leaves and photosynthesis
• Diffusion and Osmosis
• Transport in plants
• Plants need minerals
• Decay
• Farming