Bioenergetics

• Where does Photosynthesis happen?

  In chloroplasts in green plant cells - they contain pigments like chlorophyll that absorb light.
• What is the word/symbol equation for photosynthesis?

  Carbon Dioxide + Water --> Glucose + Oxygen

  6CO2 +6O2 --> C6H12O6 + 6O2
• What do plants use Photosynthesis for?

  For respiration - Transfers energy from glucose which lets the plant convert the glucose into other useful substances.

  Making cellulose - Glucose is converted into cellulose to make strong cell walls

  Making amino acids - glucose is combined with nitrate ions to make amino acids then made into proteins.

  Stored as starch - Glucose is turned into starch and stored in roots, ready for use when photosynthesis isn't happening like in the winter.
• What are the limiting factors affecting the rate of photosynthesis?

  Light Intensity - At night, light is the limiting factor.

  Temperature - In winter, temperature is the limiting factor.

  Concentration of CO2 - If there is enough light and warm enough CO2 is limiting.