Biology A2

Light dependent and Light independent reactions 

  • Created by: Lily Mosa
  • Created on: 12-12-12 20:10


Light dependent reactions:

  • Take place in the thylakoid membranes in chloroplasts
  • Uses energy from light and hydrogen from photolysis of water 
  • Produces reduced NADP (co-enzyme), ATP(energy transfer molecule) and Oxygen
  • Oxygen is either directly used in respiration or released into the atmosphere

Light Independent reactions:

  • Takes place in the stroma (enzymes available in the fluid) 
  • Uses reduced NADP and ATP formed in LDR to reduce carbon dioxide to carbohydrates through calvin cycle
  • Hydrogen is stored in carbohydrates (glucose) or converted into other organic materials
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