Practise chloroplast adaptations, pigment spectra, light-dependent reactions and the Calvin cycle while analysing chromatography, limiting factors and rate investigations.
Non-cyclic photophosphorylation occurs in the light-dependent stage of photosynthesis.
Outline the main features of non-cyclic photophosphorylation.
Some Calvin cycle intermediates are used to produce other molecules that are not part of the Calvin cycle.
Name two of these intermediates.
For each intermediate, state one example of the type of molecule that is produced.
intermediate
molecule produced
intermediate
molecule produced
Fig. 8.1 shows how the rate of uptake of carbon dioxide by a plant varies with temperature, at an optimum intensity of light on a clear day.
rate of uptake of carbon dioxide / arbitrary units (au)
Fig. 8.1
Suggest why the rate of carbon dioxide uptake levels off and then decreases after .
On Fig. 8.1, draw a curve to show the uptake of carbon dioxide on a cloudy day.