Increase in light intensity:
Alters the rate of the light-dependent reaction.
- The electrons take part in photophosphorylation, so increasing light intensity means more ATP and reduced NADP will be produced.
- ATP and reduced NADP are both used in the light-independent stage to reduce glycerate-3-phosphate to triose phosphate.
- ATP is also used to help 5 out of every 6 TP regenerate RuBP.
Decrease in light intensity:
The light-dependent stage will stop.
- This will also stop the light-independent as this stage uses products from the light-dependent stage.
- GP cannot be converted to TP as there wil be no ATP or reduced NADP availlable.
- This will reduce the amount of RuBP, whih reduces the fixation of carbon dioxide and the formation of more GP.
Comments
No comments have yet been made