Photosynthesis

• Photosynthesis


  Process that uses energy to change carbon dioxide and water into glucose and oxygen
• Photosynthesis


  1. Uses energy

  2. Changes carbon dioxide and water

  3. Produces glucose and oxygen
• Photosynthesis


  • Takes place in chloroplasts in green plant cells
  • Chloroplasts contain pigments like chlorophyll that absorb light
  • Energy is transferred to the chloroplasts from the environment by light
  • Photosynthesis is endothermic - energy is transferred from the environment
• Word equation for photosynthesis

  Carbon dioxide + water → glucose + oxygen
• Symbol equation for photosynthesis

  6CO2 + 6H2O → C6H12O6 + 6O2
• Ways plants use glucose

  • For respiration
  • Making cellulose
  • Making amino acids
  • Stored as oils or fats
  • Stored as starch
• Limiting factors of photosynthesis

  • Intensity of light
  • Concentration of CO2
  • Temperature
• Chlorophyll can also be a limiting factor of photosynthesis
• The amount of chlorophyll in a plant can be affected by disease or environmental stress
• Reduced chlorophyll means the rate of photosynthesis is reduced because they can't absorb as much light