5.6.8 Uses of Triose Phosphate Flashcards
1
Q
How is GP reduced to a 3C sugar, TP?
A
During the light-independent stage energy from ATP and hydrogen from reduced NADP (both products of the light-dependent stage) are used to reduce glycerate 3-phosphate (GP) to a phosphorylated three-carbon (3C) sugar known as triose phosphate (TP)
2
Q
What proportion of the TP molecules are used to produce useful organic molecules needed by the plant?
A
1/6th
3
Q
What can TP be used in?
A
- Triose phosphates can condense to become hexose phosphates (6C), which can be used to produce starch, sucrose or cellulose
- Triose phosphates can be converted to glycerol while glycerate 3-phosphates can be converted to fatty acids. These molecules join together to form lipids for cell membranes
- Triose phosphates can be used in the production of amino acids for protein synthesis
4
Q
What are the other 5/6th’s of TP used for?
A
Five-sixths of the triose phosphate (TP) molecules are used to regenerate ribulose bisphosphate (RuBP). This process requires ATP