Biology photosynthesis

• What are the names of two organelles responsible for storing the products of photosynthesis?


  Chloroplasts and vacuoles
• What is the primary function of photosynthesis in plants?


  To convert light energy into chemical energy
• Where does photosynthesis primarily take place in plant cells?


  In the chloroplasts
• What is the basic equation for photosynthesis?


  6CO₂ + 6H₂O + light energy → C₆H₁₂O₆ + 6O₂
• What are the key inputs and outputs of photosynthesis?


  • Inputs:
  • Light energy
  • Carbon dioxide (CO₂)
  • Water (H₂O)
  • Outputs:
  • Glucose (C₆H₁₂O₆)
  • Oxygen (O₂)
• Why is carbon dioxide not considered a product of photosynthesis?


  Because it is a reactant used in the process
• What are the two main products of photosynthesis?


  Glucose and oxygen
• Why do plants need to store glucose produced during photosynthesis?


  To provide energy when photosynthesis isn't possible
• When is stored glucose most crucial for a plant?

  During the night when there's no sunlight
• What do chloroplasts store as a product of photosynthesis?


  Starch
• What do vacuoles store in plant cells?


  Sugars, including glucose and sucrose
• What are the roles of chloroplasts and vacuoles in storing photosynthetic products?


  • **Chloroplasts**:
  • Store starch (a polymer of glucose)
  • Involved in photosynthesis
  • **Vacuoles**:
  • Store sugars (glucose and sucrose)
  • Can occupy up to 90% of a plant cell's volume
• Compare and contrast chloroplasts and vacuoles in terms of storage.

  | Characteristic | Chloroplasts | Vacuoles |

  |----------------|--------------|----------|

  | Main storage product | Starch | Sugars (glucose, sucrose) |

  | Form of storage | Insoluble granules | Soluble solution |

  | Location in cell | Cytoplasm | Central, can occupy up to 90% of cell volume |

  | Other functions | Photosynthesis | Maintain cell turgor, store other substances |

  | Membrane layers | Double membrane | Single membrane (tonoplast) |
• What is the main difference in the storage function of chloroplasts and vacuoles?


  Chloroplasts store temporary energy as starch, while vacuoles store long-term energy reserves as sugars.
• If a plant cell needs to quickly mobilize stored energy during a short period without light, which organelle is likely the primary source of this energy?


  Chloroplasts