Video: Dab tsi yog Z scheme ntawm photosynthesis?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Hauv Z - tswv yim , electrons raug tshem tawm los ntawm dej (sab laug) thiab tom qab ntawd muab tso rau hauv qis (tsis zoo siab) oxidized daim ntawv ntawm P680. Kev nqus ntawm photon excites P680 rau P680 *, uas "dhia" mus rau ib qho kev txo qis ntau hom. P680 * pub nws cov hluav taws xob rau quinone-cytochrome bf saw, nrog cov twj siv hluav taws xob.
Ib yam li ntawd, nws raug nug, vim li cas nws thiaj li hu ua Z scheme?
Qhov no yog schematic daim duab qhia kev ntws ntawm electrons los ntawm dej rau NADP +. Nws yog hu ua Z scheme vim nws txuas ob lub photosystems nyob rau hauv ib txoj kev uas zoo li tsab ntawv " Z ". Cov electrons tau txav mus rau qib siab dua vim tias lawv tau zoo siab los ntawm photon ntawm lub teeb.
Tsis tas li ntawd, Z scheme ntawm electron thauj khoom yog dab tsi? Cov Z - Tswv yim Daim duab ntawm Photosynthesis. Rajni Govindjee: koj puas xav tau ntau tus thwjtim? Cov Electron Transport Txoj kev los ntawm Dej (H2O) rau NADP + (lub Nicotinamide Adenine Dinucleotide Phosphate, oxidized daim ntawv). Muaj ntau versions ntawm lub Z - tswv yim muaj nyob rau hauv cov ntaub ntawv.
Ib sab saum toj no, Z Scheme Class 11 yog dab tsi?
Lub electron thauj cov electrons ces tsiv downhill mus rau ib tug molecule ntawm lub zog-nplua nuj NADP+ thiab qhov sib ntxiv ntawm cov electrons no txo NADP+ rau NADPH + H+. Tag nrho tswv yim ntawm kev hloov ntawm electrons yog hu ua z - tswv yim , vim nws cov yam ntxwv zoo.
Leej twg muab Z tswvyim?
Hauv kev koom tes nrog Fay Bendall, nws ua nws qhov thib ob zoo pab rau kev tshawb fawb photosynthesis nrog kev tshawb pom ntawm ' Z scheme ' ntawm electron thauj.
Pom zoo:
Lub npe ntawm cov tshuaj yog dab tsi uas lub zog khaws cia nyob rau hauv thawj theem ntawm photosynthesis?
Cov kev cuam tshuam ntawm lub teeb-dependent siv lub teeb lub zog los ua ob lub molecules uas xav tau rau theem tom ntej ntawm photosynthesis: lub zog cia molecule ATP thiab txo cov khoom siv hluav taws xob NADPH. Nyob rau hauv cov nroj tsuag, lub teeb tshwm sim tshwm sim nyob rau hauv lub thylakoid daim nyias nyias ntawm organelles hu ua chloroplasts
Dab tsi tshwm sim ntawm Theodor Engelmann qhov kev sim nto moo qhia rau nws uas wavelength S yog tus tsav tsheb zoo tshaj plaws ntawm photosynthesis?
Cov kab mob sib sau ua ke ntau tshaj plaws nyob ze ntawm ib feem ntawm cov alga uas tau nthuav tawm cov xim liab thiab xiav wavelengths. Engelmann qhov kev sim ua kom pom tias lub teeb liab thiab xiav yog lub zog zoo tshaj plaws rau photosynthesis
Lub hom phiaj ntawm ATP yog dab tsi hauv kev ua pa ntawm tes thiab photosynthesis?
Hauv qhov tseeb, nws yog qhov rov qab cov tshuaj tiv thaiv ntawm photosynthesis. Thaum nyob rau hauv photosynthesis carbon dioxide reacts nrog dej raws li catalyzed los ntawm tshav ntuj los ua suab thaj thiab oxygen, cellular respiration siv cov pa oxygen thiab zom cov suab thaj los ua carbon dioxide thiab dej nrog los ntawm kev tso tawm ntawm tshav kub, thiab zus tau tej cov ATP
Lub luag haujlwm tseem ceeb ntawm lub teeb pom kev ntawm photosynthesis yog dab tsi?
Lub luag haujlwm tag nrho ntawm cov tshuaj tiv thaiv lub teeb, thawj theem ntawm photosynthesis, yog hloov lub hnub ci zog rau hauv cov tshuaj siv hluav taws xob nyob rau hauv daim ntawv ntawm NADPH thiab ATP, uas yog siv nyob rau hauv lub teeb-yooj yim tshuaj tiv thaiv thiab roj sib sau ua ke ntawm qab zib molecules
Dab tsi yog qhov flux los ntawm lub voos xwmfab ntawm sab yog tias tus nqi ntawm Q yog ntawm ib qho ntawm nws lub ces kaum?
Raws li peb paub tias, tag nrho cov flux los ntawm tus nqi q yog q / ε 0 (Gauss txoj cai). Yog hais tias tus nqi yog nyob rau ntawm lub ces kaum ntawm lub voos xwmfab, ib co ntawm cov flux nkag mus rau hauv lub voos xwmfab thiab tawm los ntawm ib co ntawm nws lub ntsej muag. Tab sis qee qhov flux tsis nkag mus rau hauv lub voos xwmfab. Qhov 1/8th no yuav muab faib ua 3 ntu dua