5.8

State the site of the Light Independent Reaction

Stroma

State the alternative name for the Light Independent Reactions

The Calvin Cycle

What happens in Carbon Fixation

Reaction between CO2 and RuBP catalysed by RuBisCO to produce 2xGP

What happens in reduction

ATP hydrolysed to form ADP + Pi. Catalysed by ATPase

Reduced NADP forms oxidised NADP

2xGP becomes 2xGALP

What happens in phosphorylation?

ATP → ADP

GALP and Pi become RuBP

Describe the process of the Light Independent stage

• In the Stroma

• Carbon Fixation: RuBP +CO2 → 2x GP. Catalysed by RuBisCO

• Reduction: ATP → ADP + Pi, NADPH → NADP, 2x GP → 2xGALP

• Phosphorylation: ATP → ADP, 2x GALP → RuBP

Explain why the light dependent stage relies on the light dependent stage occurring

Requires the NADPH and ATP formed from the Light Dependent stage taking place