NSCI 1413 Lecture Notes - Lecture 5: C4 Carbon Fixation, Photodissociation, C3 Carbon Fixation
6 May 2017
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6co 2 + 12h 2 o + light c 6 h 12 o 6 + 6h 2 o + 6o 2. Light-dependent reactions: use light energy to produce the atp that. **light must be present for both processes to occur** Absorb light energy of varying wavelengths to perform photosynthesis. Antenna pigments: absorb photons and pass to chlorophyll (cid:536) Chlorophyll (cid:537) : green; absorb all wavelengths of light in red, blue, and violet range: cartenoids: yellow, orange, and red; absorb in blue, green, and violet range. Xanthophyll: cartenoid with slight chemical variation: phycobilins: reddish; absorb light in blue and green range. Chlorophyll (cid:536): take photons from antenna pigments to directly participate in light rxns; contains double bonds that provide electrons to flow through etc during photosynthesis. Grana: location of light reactions; layers of membranes (thylakoids) are site of. Hundreds of light-harvesting complexes in thylakoid membranes.
