Video: Koj txheeb thiab ntsuas DNA strands li cas txawm tias lawv me me?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Gel Electrophoresis yog ib txoj hauv kev txheeb thiab ntsuas tus DNA strands . Cov kws tshawb fawb siv gel electrophoresis thaum twg los tau lawv xav tau txheeb DNA strands raws li qhov ntev. Cov txheej txheem no tseem muaj txiaj ntsig rau kev sib cais lwm hom molecules, zoo li cov proteins. Cov "gel" yog lim tias hom tus DNA strands.
Nyob rau hauv no hais txog, yuav ua li cas peb txheeb DNA strands thaum lawv tseem me dhau los pom?
Cov kws tshawb fawb siv gel electrophoresis thaum twg los tau lawv xav tau txheeb DNA strands raws li ntev. Cov txheej txheem no yog kuj tseem siv tau rau kev sib cais lwm hom molecules, zoo li cov proteins. Ua li no, lub DNA strands hauv tus qauv xaiv lawv tus kheej. Staining lub txheeb pab pawg ntawm DNA ua rau lawv pom qhov muag liab qab.
Tsis tas li ntawd, DNA muaj nqi dab tsi? DNA ua muaj nyob rau hauv nws cov pob txha phosphates. Cov no tsis zoo raug nqi . Qhov no tsis zoo nqi yog lub luag haujlwm rau tag nrho DNA molecule tshwm tsis zoo raug nqi raws li ib tug me ntsis acid. Yog li nws yog hu ua * nucleic ACID, "DNacid".
Yog li ntawd, yuav ua li cas DNA strands uas yog tib qhov ntev txav los ntawm cov gel lim?
Gel electrophoresis thiab DNA DNA yog tsis zoo them, yog li ntawd, thaum siv hluav taws xob tam sim no rau tus gel , DNA yuav tsiv mus rau qhov zoo them electrode. luv dua strands ntawm DNA txav sai dua los ntawm gel ntev dua strands ua rau cov fragments tau teem nyob rau hauv kev txiav txim loj.
Vim li cas koj thiaj xav tau lub taub dej huv?
Nws ua hluav taws xob tam sim no los ntawm ib kawg ntawm gel mus rau lwm tus thiab khaws cov gel kom qhuav tawm thaum lub sijhawm sim. Vim li cas koj thiaj xav tau lub taub dej huv huv ? Txhawm rau tshem tawm txoj kev sib kis.
Pom zoo:
Cov ntsiab lus hydrophilic thiab hydrophobic txhais li cas thiab lawv cuam tshuam li cas?
Hydrophobic txhais tau hais tias cov molecule yog "ntshai" dej. Cov tails ntawm phospholipid yog hydrophobic, txhais tau tias lawv nyob hauv daim nyias nyias. Hydrophilic txhais tau hais tias cov molecule muaj affinity rau dej
Dab tsi yog kev saib xyuas ntawm kev ruaj ntseg sab hauv txawm tias muaj kev hloov pauv hauv ib puag ncig sab nraud?
Kev saib xyuas ntawm kev ruaj ntseg sab hauv txawm tias muaj kev hloov pauv hauv ib puag ncig sab nraud yog hu ua homeostasis
Koj tuaj yeem ua li cas yog tias koj tsis paub tias txheej twg yog nyob rau hauv cov txheej txheem rho tawm?
Koj tuaj yeem ua li cas yog tias koj tsis paub tias txheej twg yog nyob rau hauv cov txheej txheem rho tawm? Tso dej me me rau hauv lub caj dab ntawm qhov sib cais funnel. Ua tib zoo saib nws: yog tias nws tseem nyob hauv txheej txheej sab saud, txheej txheej ntawd yog txheej dej
Lub organelle twg ua haujlwm raws li qhov chaw xa ntawv ntawm lub xov tooj ntawm tes txheeb cov proteins thiab xa lawv mus rau lawv qhov chaw xav tau sab hauv lossis sab nraud ntawm tes?
Golgi Hais txog qhov no, dab tsi organelle yog lub luag haujlwm rau kev thauj mus los? endoplasmic reticulum (ER Qhov thib ob, cov proteins txav mus los ntawm lub cell li cas? Cov proteins txav mus los endomembrane system thiab raug xa tawm los ntawm lub ntsej muag trans ntawm Golgi apparatus nyob rau hauv thauj vesicles uas txav mus los cytoplasm thiab tom qab ntawd fuse nrog plasma membrane tso tawm protein ntau mus rau sab nraum lub cell .
Tam sim ntawd yuav siv dab tsi yog tias koj cov khaub ncaws raug hluav taws lossis yog tias muaj tshuaj lom loj tshwm sim ntawm koj cov khaub ncaws?
Tam sim ntawd yuav siv dab tsi yog tias koj cov khaub ncaws raug hluav taws lossis yog tias muaj tshuaj lom ntau tshwm sim ntawm koj cov khaub ncaws? Koj mus ncaj qha rau da dej kev nyab xeeb thiab sawb ntawm tag nrho koj cov khaub ncaws