Lub teeb pom kev ntawm photosynthesis siv lub zog los ntawm photons mus rau tsim hluav taws xob hluav taws xob siab (Daim duab 19.2). Cov electrons no tau siv ncaj qha los txo NADP+ rau NADPH thiab siv ncaj qha los ntawm cov saw hlau xa hluav taws xob los ua kom muaj zog proton-mob siab hla ib daim nyias nyias.
Electrons tuaj qhov twg hauv photosynthesis?
Nyob rau hauv (a) photosystem II, cov electron los ntawm kev sib cais ntawm cov dej, uas tso pa oxygen raws li cov khoom pov tseg. Hauv (b) photosystem I, cov hluav taws xob los ntawm chloroplast electron thauj sawOb lub photosystems nqus lub zog los ntawm cov protein uas muaj cov xim, xws li chlorophyll.
Lub luag haujlwm ntawm electrons hauv photosynthesis yog dab tsi?
Chloroplast ua lub luag haujlwm tseem ceeb hauv cov txheej txheem ntawm photosynthesis. Kawm txog photosynthesis lub teeb pom kev nyob rau hauv lub grana thiab thylakoid daim nyias nyias thiab tsaus cov tshuaj tiv thaiv nyob rau hauv lub stroma. Cov hluav taws xob hloov hluav taws xob ntawm lub teeb pom kev muab lub zog rau kev sib txuas ntawm ob lub tebchaw tseem ceeb rau qhov tsaus ntuj nti: NADPH thiab ATP.
Puas electrons tshem tawm thaum lub sijhawm photosynthesis?
Muaj ob txoj hauv kev ntawm kev hloov hluav taws xob. Nyob rau hauv cyclic electron hloov, electrons yog tshem tawm los ntawm ib qho kev zoo siab chlorophyll molecule, dhau los ntawm cov khoom siv hluav taws xob thauj mus rau lub twj tso kua mis proton, thiab rov qab mus rau chlorophyll.
Yuav ua li cas electrons ntws hauv photosynthesis?
Txoj kev ntawm electron ntws pib ntawm photosystem II, uas yog homologous mus rau photosynthetic cov tshuaj tiv thaiv chaw ntawm R. … Plastoquinone nqa electrons los ntawm photosystem II mus rau lub cytochrome bf complex, nyob rau hauv uas electrons pauv mus rau plastocyanin thiab ntxiv protons yog. Pumped rau hauv thylakoid lumen.
