photosynthesis

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

  Photosynthesis
• What type of reaction is photosynthesis considered to be?


  Endothermic reaction
• How does a seedling obtain energy for growth?


  From 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 raw materials that plants take in for 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?

  C6H12o2
• 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 leads to an increase in 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 limiting factor when light intensity is no longer increasing the rate of photosynthesis?


  The level of carbon dioxide in the air
• 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 leads to an increase in the rate of photosynthesis?


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


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


  Higher temperatures increase enzyme activity
• What happens to enzymes involved in photosynthesis at very high temperatures?


  They denature and the rate of photosynthesis falls
• What are the key factors affecting the rate of photosynthesis?


  • Light intensity
  • Carbon dioxide levels
  • Amount of chlorophyll
  • Temperature
• What is the overall process of photosynthesis?


  1. Light energy is absorbed by chlorophyll.
  2. Carbon dioxide and water are taken in.
  3. Light energy converts carbon dioxide and water into glucose.
  4. Oxygen is produced as a byproduct.