Video: Dab tsi yog qhov yuav tsum tau rau DNA replication?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Tshiab DNA yog tsim los ntawm enzymes hu ua DNA polymerases, uas xav tau ib tug template thiab primer (pib) thiab synthesize DNA nyob rau hauv lub 5' rau 3' kev taw qhia. DNA replication xav tau lwm cov enzymes ntxiv rau DNA polymerase , suav nrog DNA qhov tseem ceeb, DNA helicase, DNA ligase, thiab topoisomerase.
Ib yam li ntawd ib tug yuav nug, dab tsi yog 4 kauj ruam ntawm replication?
- Kauj ruam 1: Replication Fork Formation. Ua ntej DNA tuaj yeem rov ua dua, ob chav stranded molecule yuav tsum tau "unzipped" rau hauv ob qho tib si.
- Kauj ruam 2: Primer Binding. Qhov kev coj ua strand yog qhov yooj yim tshaj plaws rau replicate.
- Kauj Ruam 3: Elongation.
- Kauj Ruam 4: Kev txiav txim.
Tsis tas li ntawd, ATP puas xav tau rau DNA replication? DNA replication yuav tsum ceev thiab raug. Ob tug replicating diav rawg yog tsim. Qhov kev xav no xav tau ATP . Qhov nthuav tawm ib leeg-stranded DNA yog tiv thaiv los ntawm ib leeg-strand binding proteins (ssb).
Raws li txoj cai, 3 kauj ruam ntawm DNA replication yog dab tsi?
Cov kab ke ntawm cov hauv paus encodes cov ntaub ntawv genetic. Peb kauj ruam hauv qhov txheej txheem DNA replication yog pib, elongation thiab kev txiav txim.
Lub ntsiab lus ntawm DNA replication yog dab tsi?
Lub hom phiaj ntawm DNA replication yog tsim tau ob daim ntawv theej tib yam ntawm a DNA molecule. Qhov no yog qhov tseem ceeb rau kev faib cov cell thaum loj hlob lossis kho cov ntaub so ntswg puas. DNA replication xyuas kom txhua lub xov tooj tshiab tau txais nws tus kheej daim ntawv theej DNA.
Pom zoo:
Dab tsi yog qhov yuav tsum tau rau kev tsim cov protein?
Hauv kev sib txuas ntawm cov protein, peb hom RNA yuav tsum tau ua. Thawj yog hu ua ribosomal RNA (rRNA) thiab yog siv los tsim cov ribosomes. Ribosomes yog ultramicroscopic particles ntawm rRNA thiab cov protein uas cov amino acids txuas rau ib leeg thaum lub sij hawm synthesis ntawm cov proteins
Yuav ua li cas yog rau cov ntaub ntawv nug uas yuav tsum tau kawm nyob rau hauv ib tug ua txhaum cai?
Qee yam ntawm cov ntaub ntawv nug uas raug kuaj xyuas cov ntaub ntawv pov thawj tau hais hauv qab no. • Xav. • Tshawb xyuas. • Cov Nyiaj Txiag Nyiaj Txiag. • Daim ntawv cog lus. • Cov ntawv txais nyiaj. • Tub Sab Nraud. • Kev dag ntxias. • Kev cuav. • Kev tua tus kheej. • Kev tua neeg. • Nto nta. • Cov duab latent. • Kev hloov pauv. • Watermarks. • Ink stamps
Dab tsi yog qhov yuav tsum tau ua rau kev kawm tiav qib siab?
Kev Kawm Txuj Ci Kev Kawm Qib Siab no tuaj yeem ua tiav plaub xyoos. Cov kws tshawb fawb feem ntau muaj kev kawm tiav qib siab, xws li Master of Arts hauv Sociology. Thaum nyob hauv tsev kawm ntawv tiav, ib tus tuaj yeem xaiv tshwj xeeb hauv sociology thiab criminology, sociology thiab kev lag luam lossis kev puas siab puas ntsws
Dab tsi yog qhov tseem ceeb tshaj plaws uas yuav tsum muaj rau cov kua dej ntws hauv cov kav dej Dab tsi lwm yam cuam tshuam rau cov dej ntws?
Thaum ib qho kev quab yuam sab nraud yog exerted rau ntawm cov kua uas muaj, qhov tshwm sim siab yog kis sib npaug thoob plaws hauv cov kua. Yog li txhawm rau kom dej ntws, dej xav tau qhov sib txawv siab. Cov kav dej kuj tuaj yeem cuam tshuam los ntawm cov kua dej, cov yeeb nkab loj, qhov kub thiab txias (cov kav dej khov), cov kua dej ntom ntom
Dab tsi yog qhov index fossil Dab tsi yog ob qhov yuav tsum tau ua ib qho index fossil?
Cov pob txha muaj txiaj ntsig zoo yuav tsum yog qhov sib txawv lossis pom tau yooj yim, muaj ntau, thiab muaj qhov dav ntawm thaj chaw faib khoom thiab muaj ntau yam luv luv los ntawm lub sijhawm. Index fossils yog lub hauv paus rau kev txhais cov ciam teb nyob rau hauv lub sij hawm geology thiab rau kev sib raug zoo ntawm strata