photosynthesis

• water +co2 ---->02 + C6H2O6
• Endothermic reaction ---> sunlight needed
• glucose used for:

  • respiration
  • starch/fat for energy
  • making cellulose
  • making amino acids for protein
• rate increased by

  • increasing temp
  • increasing light intensity
  • increasing CO2 concentration
• practical

  1. cut pondweed put in inverted measuring cylinder filled with water then measure distance from light source
  2. let acclimate first then measure volume of oxygen (or count bubbles)
  3. repeat different distances from light sources