click below
click below
Normal Size Small Size show me how
Photosynthesis
Light independent reaction
| Term | Definition |
|---|---|
| Where does the light independent reaction occur | The light independent reaction occurs in the stroma |
| 1st step | Co2 reacts with ribulose bisphosphate to form two molecules of glycerol 3 phosphate a 3 carbon compound. This reaction is catalysed by the enzyme rubisco |
| 2nd step | GP is reduced to triose phosphate using energy from ATP and by accepting a H from reduced NADPH. Some of the carbon from TP leaves the cycle each turn to be converted to a useful substance |
| 3rd step | The rest of the molecule is used to regenerate RUBP with the energy from ATP |
| 4th step | This produces glucose however monosacharides can join to form diasacharides such as sucrose and polysacharides such as sucrose and starch. This can be converted into glycerol and combine with lipids and fatty acids for the plant. |
| 3 limiting factors for photosynthesis | CO2 concentration Tempreature Light intensity |
| What sort of practices do agricultural places use to remove limiting factors for photosynthesis | Growing plants under artificial lighting to maximise light intensity. Heating a green house gas to increase temperature and burning fuel to release more co2 |