Calvin Cycle

• step 1


  CO2 diffuses into the leaf through the stomata and goes through stroma of chloroplast
• step 2


  CO2 combines with RuBp to make GP (catalysed by RUBISCO)
• step 3


  6 carbon molecules are formed but are unstable so it becomes 2 GP
• step 4


  Reduction of GP into GALP through the hydrolysis of ATP and oxidisation of NADPH in light dependent reactions
• step 5


  some GALP is converted into useful organic substances (carbohydrates, polysaccharides, lipids, amino acids and nucleic acids)
• step 6


  5/6 GALP use ATP from light dependent reactions to form RuBp - 6th GALP x2 forms hexose sugar