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Acid Night Ions Malic Hydrogen Starch Day Pathway

Temperature significantly controls the dark reaction due to its enzymatic nature, while the light reaction is less affected.

Comment on the effect of temperature on the light and dark reaction. Dark reaction being enzymatic is temperature controlled. Light reaction is affected to a much lesser extent.

Front brief description of CAM
Back malic acid accumulates during the night
dissociation of malic acid causes release of hydrogen ions
hydrogen ions are exchanged with potassium ions
endosmosis causes turgidity and opening of stomata


starch accumulated during the day

thus C4 pathway occurs during the night and C3 pathway during the day

phosphoenolpyruvic acid regenerated during the night from starch

Tags: neet-biology::unit-4::photosynthesis

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