Photosynthesis

• What is the process that plants use to trap light energy?

  Photosynthesis
• What type of reaction is photosynthesis?

  Endothermic reaction
• From where do plants derive energy for growth?

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

  In the leaves
• What green chemical do leaves contain that absorbs light energy?

  Chlorophyll
• What are the inputs for the photosynthesis reaction?

  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 indicate if increasing light intensity increases the rate of photosynthesis?

  Light intensity was a limiting factor
• What happens when light intensity is increased beyond a certain point?

  The rate of photosynthesis levels off
• What is the next limiting factor after light intensity?

  The level of carbon dioxide
• What happens to the rate of photosynthesis when carbon dioxide levels are increased?

  The rate of photosynthesis increases
• What does it indicate if increasing carbon dioxide levels increases the rate of photosynthesis?

  Carbon dioxide was a limiting factor
• What are two other factors that can affect the rate of photosynthesis?

  Amount of chlorophyll and temperature
• How does temperature affect the enzymes involved in photosynthesis?

  Higher temperatures increase enzyme activity
• What happens to enzymes if the temperature continues to increase?

  They will denature
• What happens to the rate of photosynthesis when enzymes denature?

  The rate of photosynthesis falls
• What are the main stages of photosynthesis?

  1. Light absorption by chlorophyll
  2. Conversion of carbon dioxide and water into glucose
  3. Production of oxygen as a byproduct
• What factors affect the rate of photosynthesis?

  • Light intensity
  • Carbon dioxide levels
  • Amount of chlorophyll
  • Temperature
• What is the significance of limiting factors in photosynthesis?

  • They determine the maximum rate of photosynthesis
  • If one factor is low, it restricts the process