Photosynthesis

• What is the process called that plants use to take in energy from light?

  Photosynthesis
• Why is photosynthesis considered an endothermic reaction?


  Because it takes in energy
• What chemical in leaves absorbs light energy?


  Chlorophyll
• Where is chlorophyll found in plant cells?

  In the chloroplasts
• What are the reactants of photosynthesis?

  Carbon dioxide and water
• What is produced as a result of photosynthesis?

  Glucose and oxygen
• What is the chemical equation for photosynthesis?

  $6CO_2 +$$6H_2O \rightarrow C_6H_{12}O_6 +$$6O_2$
• How does light intensity affect the rate of photosynthesis?

  As light intensity increases, the rate of photosynthesis increases
• What could limit the rate of photosynthesis if light intensity is increased but the rate does not change?

  A lack of carbon dioxide in the air
• What does the inverse square law state about light intensity?

  Light intensity decreases with the square of the distance from the light source
• What happens to light intensity if the distance from a light source is doubled?

  Light intensity falls by a quarter
• What is the overall equation for photosynthesis in terms of reactants and products?

  $6CO_2 +$$6H_2O \rightarrow C_6H_{12}O_6 +$$6O_2$
• What are the uses of glucose produced in photosynthesis?

  • Converted into insoluble starch for storage
  • Used to produce cellulose for cell walls
  • Used to produce fats or oils for storage
  • Used for respiration to release energy
  • Used to produce amino acids for protein synthesis
• What are the limiting factors that can affect the rate of photosynthesis?

  Temperature, light intensity, carbon dioxide concentration, and amount of chlorophyll