5.6.8 Uses of Triose Phosphate

Question 1

How is TP used by the plant after the light independent stage?

Answer 1

• 1/6 of TP condenses to form hexose phosphates (6C)
• Can be used to produce starch, sucrose or cellulose
• TP can be converted to glycerol, and GP to fatty acids, so lipids can form to make cell membranes
• TP used in synthesis of amino acids for proteinsynthesis
• 5/6 of TP used to restore RUBP, requiring ATP

Question 2

What is ATP from photosynthesis used in?

Answer 2

• Reproducing RUBP
• Reducing GP to TP using NADPH
• Converted to useful organic molecules