OCR Additional Science GCSE Biology - Plants need minerals

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  • Plants need minerals
    • Absorbing minerals
      • Soluble
      • Dissolved in minerals, low soil concentration
        • Root hair cells
      • Active transport
        • Root hair cells, carrier molecules
          • Cell membranes
            • Mineral ions into cell against concentration gradient
        • Energy from respiration
    • Mineral Deficiency
      • Plant cannot get enough of mineral from soil for healthy growth
      • Nitrate - poor growth, yellow leaves
      • Magnesium - yellow leaves
      • Phosphate - poor root growth, discoloured leaves
      • Potassium - poor growth fruit and flowers, discoloured leaves
    • NPK
      • Rating
      • Fertiliser best for soil conditions in their fields
    • Fertilisers
      • Potassium compounds, K
        • Enzymes = respiration and photosynthesis
      • Phosphates, P
        • DNA and cell membranes
      • Magnesium compounds, Mg
        • Chlorophyll
      • Nitrates, N
        • Proteins = Amino acids
      • NPK
        • Rating
        • Fertiliser best for soil conditions in their fields

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