photosynthesis

• limiting factors


  • light intensity
  • CO2 conc.
  • temp.
• light intensity


  • increased light intensity = higher rate of reaction
  • flat line- light intensity no longer limiting factor, other factors (CO2, temp) limiting rate
• CO2 conc.


  • increased CO2 conc. = increased rate of reaction
  • flat line- CO2 conc. no longer limiting factor
• most limiting factor

  CO2- when it's a sunny day there will be enough light and temp, so depends on CO2 conc.
• temp


  • increased temp --> increased kinetic energy --> increased enzyme activity --> increase in rate of reaction
  • optimum temp- 35 degrees
  • temp: 40-50 enzyme's active site denatures
• cold weather


  decrease rate of reaction as not enough successful collisions between particles
• light intensity is proportional to 1/distance squared