2.3 Photosynthesis

• The reactants of photosynthesis are sunlight, carbon dioxide, and water
• What is the chemical formula for oxygen produced in photosynthesis?

  O₂
• Order the stages of photosynthesis:

  1️⃣ Light-dependent reactions

  2️⃣ Light-independent reactions (Calvin cycle)
• The light-dependent reactions occur in the stroma of the chloroplast.

  False
• In what part of the chloroplast does the Calvin cycle take place?

  Stroma
• The Calvin cycle converts CO₂ into glucose.

  True
• How does photosynthesis support ecosystems?

  Provides energy
• What is photosynthesis?

  Process of food production
• Match the reactants of photosynthesis with their chemical formulas:

  Sunlight ↔️ N/A

  Carbon Dioxide ↔️ CO₂

  Water ↔️ H₂O
• Chlorophyll is located in the stroma of chloroplasts.

  False
• The fluid surrounding the thylakoids in a chloroplast is called the stroma
• Match the products of the light-dependent reactions with their descriptions:

  ATP ↔️ Provides energy for the Calvin cycle

  NADPH ↔️ Provides reducing power
• Steps in the Calvin cycle

  1️⃣ Carbon fixation

  2️⃣ Reduction

  3️⃣ Regeneration
• Photosynthesis releases oxygen, which is essential for the respiration of animals and humans
• Photosynthesis occurs in the chloroplasts of plant cells.


  True
• Chloroplasts have a double membrane structure with an outer and inner membrane
• What is the green pigment in chloroplasts that absorbs sunlight?

  Chlorophyll
• What byproduct is released during the light-dependent reactions?

  Oxygen
• CO₂ is fixed into organic compounds by the enzyme RuBisCO
• What is the primary role of photosynthesis in food production?

  Produces glucose