Video: Lub zog coupling tshuaj tiv thaiv yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
zog coupling : Lub zog sib txuas tshwm sim thaum lub zog ua los ntawm ib tug tshuaj tiv thaiv los yog qhov system siv los tsav lwm tus tshuaj tiv thaiv los yog system. endergonic: piav qhia a tshuaj tiv thaiv uas absorbs (heat) zog los ntawm nws ib puag ncig. exergonic: Piav a tshuaj tiv thaiv uas tso tawm zog (kub) rau hauv nws ib puag ncig.
Kuj nug, dab tsi yog lub zog coupling?
Lub zog sib txuas yog hloov ntawm zog los ntawm catabolism mus rau anabolism, los yog hloov ntawm zog los ntawm exergonic txheej txheem mus rau endergonic txheej txheem. Los yog dawb zog (los ntawm ATP hydrolysis) yog ua ke los yog functionally txuas rau lub zog xav tau lwm yam tshuaj tiv thaiv.
Tom qab ntawd, lo lus nug yog, ATP coupling yog dab tsi? ATP sib txuas yog kev siv lub zog dawb tso tawm los ntawm hydrolysis ntawm ATP los tsav cov tshuaj tiv thaiv thermodynamically unfavorable.
Xav txog qhov no, qhov piv txwv ntawm lub zog sib txuas yog dab tsi?
Ua kom Zog Qhov kev hloov pauv hloov ntawm ib qho mus rau lwm qhov yog hu ua zog coupling . Ib piv txwv ntawm lub zog coupling Kev siv ATP suav nrog lub twj tso kua mis transmembrane ion uas tseem ceeb heev rau kev ua haujlwm ntawm tes.
Vim li cas cov tshuaj tiv thaiv ua ke hauv lub neej?
A tshuaj tiv thaiv tshwm sim uas tso tawm lub zog (xws li ATP poob phosphate los ua ADP + Pi). Yog hais tias qhov no yog uncoupled, lub zog yuav tsuas tig mus rau hauv tshav kub. Yog nws yog ua ke , tom qab ntawd nws tuaj yeem siv los roj qee qhov txheej txheem.
Pom zoo:
Vim li cas cov tshuaj tiv thaiv kev zom zaub mov hu ua hydrolysis cov tshuaj tiv thaiv?
Thaum lub sij hawm zom mov, piv txwv li, decompositionreactions zom cov zaub mov loj rau hauv cov me me los ntawm kev ntxiv cov dej molecules. Hom tshuaj no hu ua hydrolysis. Raws li dej absorbs heatenergy, qee lub zog yog siv los rhuav tshem hydrogenbonds
Lub npe rau ib yam khoom tsim nyob rau hauv cov tshuaj tiv thaiv tshuaj yog dab tsi?
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Puas yog dej tiv thaiv tsis muaj zog tiv thaiv?
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Cov tshuaj tiv thaiv dab tsi yog qhov tshuaj tiv thaiv neutralization?
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Dab tsi yog tshuaj lom neeg cov tshuaj tiv thaiv thiab cov tshuaj tiv thaiv lub cev?
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