Nutrition

• What is the photosynthesis theory?

  • Photosynthesis is an endothermic reaction in which energy from sunlight is transferred to the chloroplasts in green plants
  • Energy from sunlight is absorbed by chlorophyll, a green pigment found inside chloroplasts
  • Green plants use this energy to make the carbohydrate glucosefrom the raw materials carbon dioxide and water
  • At the same time, oxygen is made and released as a waste product
• Define photosynthesis:

  • Photosynthesis can be defined as the process by which plants manufacture carbohydrates from raw materials using energy from light
• What is the product of photosynthesis?

  • Plants use the glucose they make as a source of energy in respiration
  • They can also use it to
  • Produce starch for storage
  • Synthesise lipids for an energy source in seeds
  • To form cellulose to make cell walls
  • Produce amino acids (used to make proteins) when combined with nitrogen and other mineral ions absorbed by roots