B2.3 Photosynthesis

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GCSE (B2) Biology Mapa Mental sobre B2.3 Photosynthesis, creado por killthemoment el 03/08/2014.
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Mapa Mental por killthemoment, actualizado hace más de 1 año
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Resumen del Recurso

B2.3 Photosynthesis
  1. B2.3.1 Photosynthesis
    1. Green plants and algae use light energy to make their own food. They obtain the raw materials they need to make this food from the air and the soil. The conditions in which plants are grown can be changed to promote growth.
      1. Photosynthesis is the process in plants in which carbon dioxide and water is converted into glucose and oxygen.
        1. Light energy is absorbed by a green substance called chlorophyll, which is found in chloroplasts in some plant cells and algae. This energy is used by converting carbon dioxide (from the air) and water (from the soil) into sugar (glucose) with oxygen is released as a by-product.
          1. The rate of photosynthesis may be limited by shortage of light, low temperature and shortage of carbon dioxide.
            1. Light, temperature and the availability of carbon dioxide interact and in practice any one of them may be the factor that limits photosynthesis.
              1. For optimum growth and saving time, energy and money, farmers use light intensity, temperature and concentration of carbon dioxide to to create the best conditions in greenhouses for crops to grow.
                1. The glucose produced in photosynthesis may be converted into insoluble starch for storage. Plant cells use some of the glucose produced during photosynthesis for respiration.
                  1. Some glucose in plants and algae is used: to produce fat or oil for storage to produce cellulose, which strengthens the cell wall to produce proteins.
                    1. To produce proteins, plants also use nitrate ions that are absorbed from the soil.
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