Photosynthesis
Brief key terms associated with each reaction and limiting factors
- Created by: clarenceofcydonia
- Created on: 18-03-13 20:52
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- Photosynthesis
- LIR
- RuBP
- CO2
- 2X G3P
- 2X TP
- RuBISCO Enzyme
- 1/6 to Glucose
- lipids
- amino acids
- carbohydrates
- 5/6 RuBP regeneration, ATP to ADP+Pi
- Reduction needs energy from ATP, and electron and proton from reduced NADP
- LDR
- Photolysis
- Water: O2, H+ and e-
- replaces e- lost by chloroplast, proton used to reduce NADP
- Water: O2, H+ and e-
- Photoexcitation
- electrons to higher energy orbital
- Photophosphorylation and Electron Transport Chain
- High energy e- down ETC- redox reactions. Energy released at each level used to produce ATP from ADP+Pi
- Light energy absorbed by chlorophyll
- Reduced NADP and ATP
- Requires ADP+Pi
- Thylakoid membranes
- Photolysis
- Limiting Factors
- Carbon dioxide
- Low conc, limits LIR by reducing rate of initial reaction with RuBISCO
- Light intensity
- Low, limits LDR by reducing no. of e- in chlorophyll that become photoexcited
- Temperature
- low, limits rate of enzyme activity.
- Compensation point: p/s and R occur at rates such there is no net gas exchange
- Carbon dioxide
- LIR
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