Photosynthesis

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…