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Biochemistry (Fach) / Photosynthesis (Lektion)
- site of photosynthesis chloroplasts
- light reaction (short) in the thylakoid disks harvesting of of light to form NADPH, ATP and O2
- dark reaction (short) in the stroma fixation of Co2 to form glucose
- PS1 reduction of NADP+ t NADPH
- PS2 oxidation of H2O to ATP
- overall formula of light reaction NADP+ + H2O -> NADPH + H+ + 1/2 O2
- proton gradient ny H20 splitting to form O2, which is releases a proton onto the thylakopid space ATP synthase converts ADP to ATP
- Dark reaction, players fixes CO2 to form glucose with the reducing power of NADPH and energy of ATP produced in the light reaction central molecule is the ribulose-1,5-bisphosphate which is initiall carboxylated by CO2 and then split into two 3-phoispoglycerates six carboxylations are used to produce 12 3-phosphoglycerates and thereby one molecule of glucose
- alternative in tropical plants Hatch-Slack pathway thick coating prevents suffiecient diffusion of CO2
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