PROCESS

• WHAT IS TP?

  triose phosphate
• WHAT IS TRIOSE PHOSPHATE?

  a 3 carbon sugar
• WHAT IS GP?

  glycerate 3-phosphate
• WHAT IS GLYCERATE 3-PHOSPHATE?

  a 3 carbon acid
• WHAT IS RuBP?

  ribulose biphosphate
• WHAT IS RIBULOSE BIPHOSPHATE?

  a 5 carbon sugar
• PROCESS?

  1. CO2 from atmosphere diffuses into leaf through stomata
  2. Dissolves in water around mesophyll
  3. Diffuses through CSM, cytoplasm, chloroplast membrane and into stroma
  4. CO2 reacts with RuBP
  5. Catalysed by rubisco
  6. Produces two molecules of GP
  7. Reduced NADP from LDR used to reduce GP to TP, using energy supplied from ATP
  8. NADP re-formed
  9. Returns to LDR to be reduced again by gaining more protons
  10. Some TP molecules converted to organic substances required by plant
  11. More TP molecules used to regenerate RuBP using ATP from LDR
• WHAT IS RUBISCO?

  an enzyme that catalyses the reaction between CO2 and RuBP
• REAL NAME FOR RUBISCO?

  ribulose biphosphate carboxylase
• HOW IS NADP REDUCED AGAIN?

  gaining more protons
• EXAMPLES OF ORGANIC SUBSTANCES REQUIRED BY THE PLANT?

  starch, cellulose, lipids, glucose, AAs, nucleotides