bioenergetics

• Photosynthesis


  The reaction that plants use to trap light energy
• Plants use light for their source of energy
• Photosynthesis


  • It is an endothermic reaction
  • It takes place in the leaves of a plant
  • Leaves contain the green chemical chlorophyll
• Photosynthesis


  1. Plant takes in carbon dioxide and water

  2. Light energy is absorbed by chlorophyll

  3. Light energy is used to convert carbon dioxide and water into glucose

  4. Oxygen is also produced
• Chemical formulas


  • Carbon dioxide (CO2)
  • Water (H2O)
  • Glucose (C6H12O6)
  • Oxygen (O2)
• Light intensity increases


  Rate of photosynthesis increases
• Light intensity is a limiting factor


  Photosynthesis is not as fast as it could be because there isn't enough light
• Carbon dioxide level increases

  Rate of photosynthesis increases
• Carbon dioxide is a limiting factor


  Photosynthesis is not as fast as it could be because there isn't enough carbon dioxide
• Factors affecting rate of photosynthesis

  • Amount of chlorophyll in the leaf
  • Temperature
• Temperature increases


  Enzymes involved in photosynthesis work faster, increasing the rate
• Temperature keeps increasing


  Enzymes denature, decreasing the rate of photosynthesis