photosynthesis

• What is photosynthesis?

  A chemical reaction converting light to energy
• How does energy transfer occur in photosynthesis?

  Energy is transferred from sunlight to leaves
• What type of reaction is photosynthesis?

  Endothermic reaction
• What role does chlorophyll play in photosynthesis?

  Chlorophyll absorbs light energy
• How are leaves adapted to photosynthesis?

  Leaves increase photosynthesis rate when needed
• What is the equation for photosynthesis?

  Carbon dioxide + water -> glucose + oxygen
• What is a limiting factor in photosynthesis?

  Anything that limits the rate of a reaction
• Name one limiting factor affecting photosynthesis.

  Temperature
• How does carbon dioxide concentration affect photosynthesis?

  Increased concentration raises the rate
• What happens to photosynthesis at low temperatures?

  Rate is low due to less kinetic energy
• Why do high temperatures decrease photosynthesis rate?

  Enzymes are denatured at high temperatures
• What is often the limiting factor for photosynthesis?

  Carbon dioxide
• How does light intensity affect photosynthesis?

  Increased light energy raises the rate
• What happens to photosynthesis with little or no light?

  Photosynthesis will stop
• What do commercial greenhouses control to maximize photosynthesis?

  Limiting factors affecting photosynthesis
• What are the uses of glucose produced in photosynthesis?

  • Convert to insoluble starch for storage
  • Produce fat or oil for storage
  • Produce amino acids for protein synthesis (requires nitrate ions)
  • Produce cellulose to strengthen walls
  • Used in respiration to produce energy
• What is one way plants store glucose?

  Convert it into insoluble starch
• What do plants need to produce amino acids?

  Nitrate ions from the soil
• What is cellulose used for in plants?

  To strengthen cell walls
• How is glucose used in respiration?

  To produce energy