what is photosynthesis

• What is the process by which plants use light for energy called?

  Photosynthesis
• Why is photosynthesis considered an endothermic reaction?

  Because it takes in energy from light
• How does a seedling obtain the energy it needs to grow?

  From the light energy trapped by photosynthesis
• Where does photosynthesis take place in a plant?

  In the leaves
• What green chemical in leaves absorbs light energy?

  Chlorophyll
• What are the reactants that plants take in during photosynthesis?

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

  Oxygen
• What is the word equation for photosynthesis?

  Carbon dioxide + Water → Glucose + Oxygen
• What is the chemical formula for carbon dioxide?

  CO₂
• What is the chemical formula for water?

  H₂O
• What is the chemical formula for glucose?

  C₆H₁₂O₆
• What is the chemical formula for oxygen?

  O₂
• What happens to the rate of photosynthesis when light intensity is increased?

  The rate of photosynthesis increases
• What does it mean if light intensity is a limiting factor in photosynthesis?

  It means that photosynthesis is not occurring at its maximum rate due to insufficient light
• What happens when the rate of photosynthesis levels off despite increasing light intensity?

  Another factor is now limiting the rate of photosynthesis
• What is the effect of increasing carbon dioxide levels on the rate of photosynthesis?

  The rate of photosynthesis increases
• What happens when carbon dioxide is no longer a limiting factor?

  The rate of photosynthesis levels off
• How does the amount of chlorophyll affect photosynthesis?

  Less chlorophyll means less light energy can be trapped, resulting in a lower rate of photosynthesis
• How does temperature affect the rate of photosynthesis?

  Increasing temperature initially increases the rate, but too high a temperature can denature enzymes and decrease the rate
• What are the main factors that affect the rate of photosynthesis?

  • Light intensity
  • Carbon dioxide levels
  • Amount of chlorophyll
  • Temperature
• Where can students find more questions on photosynthesis?

  In the vision world book
• What should students be able to do by the end of the video on photosynthesis?

  Describe what happens in photosynthesis and the factors that affect its rate