2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
RNAP tsis tsuas yog pib RNA transcription, nws tseem coj cov nucleotides mus rau hauv txoj hauj lwm, txhawb kev txuas thiab elongation, muaj cov ntaub ntawv pov thawj hauv nruab nrab thiab hloov peev xwm, thiab kev paub txog kev txiav tawm. Hauv eukaryotes, RNAP tuaj yeem tsim cov saw hlau ntev li 2.4 lab nucleotides.
Puas yog RNA polymerase muaj peev xwm ua pov thawj?
Txhua nucleic acid polymerases ntxig cov nucleotides tsis raug thaum lub sij hawm saw elongation. … Qhov kev hloov pauv siab no yog los ntawm tsis muaj peev xwm nyeem ntawv hauv RNA polymerases. Cov enzymes no ua yuam kev, tab sis lawv kho tsis tau.
Vim li cas RNA polymerase tsis muaj ntawv pov thawj?
Nws feem ntau xav tias RNA pol. Tsis tas yuav ua pov thawj, vim RNA molecules ua haujlwm cov ntawv luam uas tuaj yeem zam tau ob peb qhov yuam kev (thiab tuaj yeem hloov tau los ntawm cov ntawv luam tawm tshiab los ntawm DNA). Ceeb Toom: Muaj qee qhov pov thawj tias qee qhov RNA polymerases muaj 3' txog 5' exo kev ua thiab tuaj yeem ua pov thawj.
Puas proofreading tshwm sim nyob rau hauv transcription?
Proofreading pib nrog fraying ntawmcov misincorporated nucleotide deb ntawm DNA template, uas pauses transcription. Tom qab rov qab los ntawm RNAP los ntawm ib txoj hauj lwm ua rau cov nucleolytic cleavage ntawm RNA dinucleotide uas muaj cov misincorporated nucleotide.
Puas yog RNA polymerase muaj cov ntaub ntawv pov thawjkev ua si thaum lub sij hawm sau ntawv xeem ntawv?
RNA polymerase tsis muaj kev ua pov thawj thaum lub sijhawm sau ntawv.
Pom zoo:
Lub sijhawm sau ntawv rna polymerase transcribes?
Kev txhais lus pib thaum RNA polymerase khi rau qhov kev txhawb nqa ib ntus ze rau qhov pib ntawm cov noob (ncaj qha lossis los ntawm cov proteins pab). RNA polymerase siv ib qho ntawm cov DNA strands (cov qauv qauv strand template strand Los ntawm lub rooj sib tham, coding strand yog cov strand siv thaum tso saib DNA ib ntus.
Puas muaj pov thawj lossis tau ua pov thawj?
daim ntawv proven yog ib daim ntawv tsis sib xws yav dhau los. Ib tug tuaj yeem hais tau, Nws tau ua pov thawj nws txoj kev xav, lossis Nws tau ua pov thawj nws txoj kev xav. Raws li OED, pov thawj yog "cov ntawv ib txwm [ntawm kev koom tes yav dhau los]
Daim ntawv cog lus pov hwm puas suav nrog lub npe ntawm cov ntawv pov hwm?
tshaj tawm ib feem ntawm daim ntawv tuav pov hwm tsheb daim ntawv cog lus pov hwm uas lub npe ntawm cov ntawv pov hwm, tsheb tsim thiab qauv, tsab cai pib thiab hnub kawg, nyiaj pov hwm, thiab lwm yam. Daim ntawv cog lus pov hwm - hais tias dab tsi nws yog tus neeg tuav pov hwm pom zoo raws li cov lus cog tseg.
Daim ntawv pov thawj puas txhais tau tias koj tau ntawv pov thawj?
A daim ntawv pov thawj txoj haujlwm tsis ua rau daim ntawv pov thawj kev tshaj lij. Yog lawm, cov kev kawm uas koj kawm hauv daim ntawv pov thawj tuaj yeem pab koj npaj kom tau txais daim ntawv pov thawj kev ua haujlwm tshwj xeeb, tab sis kev tau txais daim ntawv pov thawj tsis zoo ib yam li tau txais ntawv pov thawj.
Puas yog daim ntawv pov thawj lossis ntawv pov thawj tus kws qhia davhlau?
Daim ntawv pov thawj yog qhov ua tau lees paub. Lawv zoo sib xws tab sis tsis zoo ib yam. Qhov tseeb, hais txog cov kws qhia dav hlau, FAA ditched Certificate / Certified adjective ntev dhau los. Tam sim no tsuas yog "tso cai" tus kws qhia.
