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)

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2
Q

What proportion of the TP molecules are used to produce useful organic molecules needed by the plant?

A

1/6th

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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
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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

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