Photosynthesis

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  • Created by: Sabina
  • Created on: 27-11-13 20:05
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  • Photosynthesis
    • Green plants and algae use light energy to make their own food. They obtain the raw materials needed from both the air and soil.
      • The conditions in which plants are grown will affect the rate of photosynthesis and the rate of growth.
    • Equation
      • Carbon dioxide + water --- glucose + oxygen
      • Light energy is also needed
        • Carbon dioxide + water --- glucose + oxygen
    • During Photosynthesis
      • Light energy is absorbed by chlorophyll
        • This energy is used to convert carbon dioxide and water into glucose
      • Oxygen is released as a by product
        • This energy is used to convert carbon dioxide and water into glucose
    • Limiting Factors
      • Light
      • Temperature
      • Carbon dioxide
      • Enhancing these factors in greenhouses will produce better yields
    • Using the Glucose
      • Glucose produced in photosynthesis may be converted into insoluble starch for storage or growth
      • Plant cells use some of the glucose straight away for processes such as respiration
      • It can also be used to produce...
        • Fat or oil for storage
        • Cellulose
        • Proteins (nitrate ions are also used to produce these)

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