Video: Dab tsi yog txhais los ntawm oxidative phosphorylation?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Txhais ntawm oxidative phosphorylation
: lub synthesis ntawm ATP los ntawm phosphorylation ntawm ADP uas lub zog tau txais los ntawm kev thauj khoom hluav taws xob thiab uas tshwm sim hauv mitochondria thaum lub sij hawm ua pa aerobic.
Ua raws li qhov xav tau, oxidative phosphorylation yog dab tsi thiab nws tshwm sim qhov twg?
Oxidative phosphorylation yog ib tug mechanism rau ATP synthesis nyob rau hauv cov nroj tsuag thiab tsiaj hlwb. Nws suav nrog chemiosmotic coupling ntawm electron thauj thiab ATP synthesis. Oxidative phosphorylation tshwm sim hauv mitochondria. Lub mitochondrion muaj ob daim nyias nyias: ib daim nyias nyias thiab ib daim nyias nyias.
Tsis tas li ntawd, cov theem ntawm oxidative phosphorylation yog dab tsi? Peb qhov loj cov kauj ruam hauv oxidative phosphorylation yog (a) oxidation - txo cov kev cuam tshuam nrog kev hloov hluav taws xob ntawm cov protein tshwj xeeb uas kos rau hauv daim nyias nyias mitochondrial; (b) tiam ntawm proton (H+) gradient hla lub puab mitochondrial membrane (uas tshwm sim ib txhij nrog cov kauj ruam (a
Tsis tas li ntawd, vim li cas nws thiaj li hu ua oxidative phosphorylation?
Thaum cov khoom siv hluav taws xob no tau siv los txo cov pa oxygen molecular rau hauv dej, ntau lub zog dawb tau tso tawm, uas tuaj yeem siv los tsim ATP. Oxidative phosphorylation yog cov txheej txheem uas ATP yog tsim los ntawm kev hloov ntawm electrons los ntawm NADH lossis FADH 2 rau O 2 los ntawm ib tug series ntawm electron cab kuj.
Puas yog NADH 2.5 lossis 3 ATP?
Yuav kom dhau cov electrons los ntawm NADH mus kawg Oxygen txais, tag nrho ntawm 10 protons raug thauj los ntawm matrix mus rau inter mitochondrial membrane. 4 protons ntawm complex 1, 4 ntawm complex 3 thiab 2 ntawm complex 4. Yog li rau NADH - 10/4= 2.5 TSI yog ua ua tau. Ib yam li ntawd rau 1 FADH2, 6 protons raug txav mus li 6/4 = 1.5 ATP yog ua.
Pom zoo:
Oxidative phosphorylation yog dab tsi thiab nws tshwm sim qhov twg?
Oxidative phosphorylation yog ib txoj hauv kev rau ATP synthesis hauv cov nroj tsuag thiab tsiaj txhu. Nws suav nrog chemiosmotic coupling ntawm electron thauj thiab ATP synthesis. Oxidative phosphorylation tshwm sim hauv mitochondria. Lub mitochondrion muaj ob daim nyias nyias: ib daim nyias nyias thiab ib daim nyias nyias
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
Dab tsi yog txhais los ntawm lub sij hawm dissociation thiab dab tsi yog ib qho piv txwv ntawm cov khoom uas dissociates?
Dissociation, nyob rau hauv chemistry, sib cais ntawm ib yam khoom mus rau hauv atoms los yog ions. Thermal dissociation tshwm sim ntawm qhov kub thiab txias. Piv txwv li, hydrogen molecules (H 2) dissociate rau hauv atoms (H) ntawm kub heev; ntawm 5,000 ° K txog 95% ntawm cov molecules hauv cov qauv ntawm hydrogen yog dissociated rau hauv atoms
Ob theem ntawm oxidative phosphorylation yog dab tsi?
Oxidative phosphorylation tshwm sim nyob rau hauv ob kauj ruam: electron thauj saw thiab chemiosmosis
Mitochondrial oxidative phosphorylation yog dab tsi?
Oxidative phosphorylation (UK /?kˈs?d. ?. s?ˌde?. t?v/ lossis electron transport-linked phosphorylation) yog txoj hauv kev uas cov hlwb siv cov enzymes los oxidize cov as-ham, yog li tso tawm lub zog uas siv los tsim adenosine. triphosphate (ATP). Hauv feem ntau eukaryotes, qhov no tshwm sim hauv mitochondria