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  • Created by: Rachel
  • Created on: 27-03-13 14:00

What is starch and where does the energy it contains come from?

  • Starch is made by joining together thousands of glucose molecules. When starch is broken down in digestion, glucose is released and can be used for respiration 
  • Plant cells also need to respire and so need a supply of glucose. Plants can actually manufacture their own glucose using raw materials of carbon dioxide and water 
  • This process is called photosynthesis. Plants can also store the glucose they make as carbohydrates, like starch

Carbon dioxide + water --> glucose + oxygen

  • Photosynthesis is a complex series of enzyme-catalysed reactions which occurs inside cell organelles called chloroplasts
  • Light is the energy source for photosynthesis and


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