Light Independent Reaction

Question 1

LIR

Answer 1

• Calvin Cycle
• Stroma - contains enzyme called RuBisCo which catalyses the reaction
• temperature sensitive as it involves enzymes
• uses CO2, reduced NADP and ATP to form hexose sugar

Question 2

Calvin Cycle?

Answer 2

• ATP hydrolysed - energy
• reduced NADP donates hydrogen to reduce molecules GP
• CO2 reacts with ribulose phosphate - forms two molecules of glycerate 3-phosphate (3 carbon compound)
• GP reduced to triose phosphate using energy from ATP and accepting reduced NADP
• some carbon leaves from TP to turn into useful organic substances
• The rest of the molecule used to regenerate RuBP

Question 3

Limiting Factors

Answer 3

• anything that reduces rate of photosynthesis
• temperature, CO2 concentration and light intensity