photosynthesis

• What process must a plant carry out to grow and survive?

  Photosynthesis
• Where does photosynthesis take place in a plant?

  In the leaves, specifically in chloroplasts
• What pigment in chloroplasts absorbs light for photosynthesis?

  Chlorophyll
• What does chlorophyll absorb from the environment?

  Light energy
• What are the reactants used in photosynthesis?

  Carbon dioxide and water
• What is the chemical equation for photosynthesis using symbols?

  6 CO₂ + 6 H₂O → C₆H₁₂O₆ + 6 O₂
• Why is light written above the reaction line in the photosynthesis equation?

  Because the reaction requires light energy to take place
• What type of reaction is photosynthesis classified as?

  An endothermic reaction
• How is energy transferred from the environment to chloroplasts?

  By light
• How does carbon dioxide enter the leaves of a plant?

  Through the stomata
• How is water transported to the leaves of a plant?

  By the xylem
• What is the main product that plants want from photosynthesis?

  Glucose
• What do plants sometimes use the oxygen produced in photosynthesis for?

  For respiration
• What is one way glucose is used by plants?

  For cellular respiration to release energy
• What are the five main uses of glucose in plants?

  • Cellular respiration for energy
  • Making cellulose for cell walls
  • Making starch for long-term storage
  • Making amino acids with nitrate ions
  • Making oils and fats for energy storage
• Why is starch a better form of glucose for storage?

  Because it is more compact and insoluble
• When do plants typically break down starch to glucose?

  When photosynthesis isn't happening much, like at night or in winter
• How do plants make amino acids?

  By combining glucose with nitrate ions from the soil
• What do plants use amino acids to make?

  Proteins
• Why is glucose essential for plants?

  It is crucial for their growth rate and energy
• What factors affect the rate of photosynthesis?

  • Light intensity
  • Temperature
  • Carbon dioxide concentration
  • Amount of chlorophyll