bioenergetics

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

  Photosynthesis
• What type of reaction is photosynthesis?

  Endothermic reaction
• From where does a seedling get energy to grow?

  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 inputs for photosynthesis?

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

  Glucose and 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?

  Photosynthesis is not as fast as possible
• 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?

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

  The rate of photosynthesis increases
• What does it indicate when carbon dioxide is a limiting factor?

  Photosynthesis is not as fast as possible
• What other factors can affect the rate of photosynthesis?

  Amount of chlorophyll and temperature
• How does the amount of chlorophyll affect photosynthesis?

  Less chlorophyll means lower photosynthesis rate
• How does temperature affect the enzymes involved in photosynthesis?

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

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

  • Light intensity
  • Carbon dioxide level
  • 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. Glucose and oxygen are produced
• What are the products of photosynthesis?

  • Glucose
  • Oxygen
• What is the significance of chlorophyll in photosynthesis?

  • Absorbs light energy
  • Essential for the photosynthesis process
• What happens to the rate of photosynthesis when temperature increases?

  • Rate increases until enzymes denature
  • Then the rate falls
• Why is it important to understand limiting factors in photosynthesis?

  • Helps optimize plant growth
  • Essential for agricultural practices
• What is produced during photosynthesis?

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

  Carbon dioxide + water → glucose + oxygen
• When does photosynthesis occur?

  During the day when there's light
• Where does respiration take place in plant cells?

  In the mitochondria
• What is the first use of glucose produced in photosynthesis?

  To release energy in respiration
• What is the second use of glucose produced in photosynthesis?

  To produce the storage molecule starch
• How can starch be converted back to glucose?

  When the plant needs it, such as at night
• What do fats and oils serve as for the plant?

  Storage form of energy
• What is cellulose made from?

  Glucose produced by photosynthesis
• What is the final use of glucose produced in photosynthesis?

  To produce amino acids
• What do plants need to absorb to make amino acids from glucose?

  Nitrate ions from the soil
• What are the main uses of glucose produced in photosynthesis?

  • Release energy in respiration
  • Produce starch for storage
  • Convert to fats and oils for energy
  • Synthesize cellulose for cell walls
  • Produce amino acids for proteins