GCSE Biology (AQA)

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Photosynthesis

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Bioenergetics Photosynthesis

Photosynthesis

3:23 Photosynthesis Rate and Temperature
Spec 4.4.1.1
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  • Plants perform photosynthesis to create their own food in the form of glucose.
  • Chloroplasts in plant cells contain chlorophyll which captures light energy.
  • Light energy is used in chloroplasts to drive a chemical reaction that produces sugar.
  • Photosynthesis is an endothermic reaction, meaning it requires energy from the environment, specifically light.
  • The reactants of photosynthesis are carbon dioxide and water, which are taken in through the leaves and roots respectively.
  • The products of photosynthesis are glucose (sugar) and oxygen, with oxygen being released as a waste product.
  • Gases move in and out of leaves via stomata using diffusion, and water is transported up the plant through transpiration.
  • Essential factors for photosynthesis include carbon dioxide, water, warmth, and light energy.
  • The word equation for photosynthesis is: Carbon dioxide + water + light energy ��� glucose + oxygen.
  • The symbol equation for photosynthesis is represented with chemical symbols and shows the stoichiometry of the reactants and products.
  • It's important to recognize and recall the chemical symbols for carbon dioxide (CO2), water (H2O), glucose (C6H12O6), and oxygen (O2) for academic purposes.

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