Study notes

Photosynthesis & Nutrition

How plants make their own food, the leaf's role, what speeds up or slows down photosynthesis, and how humans get and process food.

What this topic covers

  • Photosynthesis: carbon dioxide + water becomes glucose + oxygen
  • Chlorophyll absorbs the light energy
  • Stomata let gases in and out of the leaf
  • Light, CO2, and temperature can each hold back the rate
  • Photosynthesis is NOT the same as respiration
  • Plants make food, humans eat it
  • Food passes through four main organs, in order
  • A balanced diet is about variety and proportion

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