2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Okazaki fragments yog tam sim no hauv ob qho tib si prokaryotes thiab eukaryotes. DNA molecules nyob rau hauv eukaryotes txawv ntawm cov voj voog molecules ntawm prokaryotes nyob rau hauv uas lawv loj dua thiab feem ntau muaj ntau lub hauv paus chiv keeb ntawm replication.
Vim li cas Okazaki tawg tsam ntev dua hauv prokaryotes?
Thaum kuv tab tom nrhiav cov lus teb, kuv tuaj yeem paub tias hauv Prokaryotes, DNA replication yog txuas rau lub voj voog ntawm tes. … Li no, txij li Okazaki fragment turnover yog tus nqi limiting yam ntawm cov kauj ruam (slow txheej txheem) lub cell cant them me me fragment loj thiab yuav tsum synthesize loj fragment thiaj li phim li ceev.
Puas prokaryotes puas muaj cov hlua khi?
Kev rov ua dua hauv prokaryotes pib los ntawm ib ntu pom ntawm chromosome hu ua keeb kwm ntawm kev rov ua dua-qhov taw tes ntawm DNA qhib. … Lwm txoj hlua yog muab tso rau hauv ib qho kev taw qhia deb ntawmreplication diav rawg, nyob rau hauv luv luv stretches ntawm DNA hu ua Okazaki fragments. Txoj hlua no hu ua txoj hlua khi.
Pob kab mob puas muaj Okazaki tawg?
Okazaki fragments hauv bacteria thiab hauv bacteriophage T4 yog 1000-2000 nucleotides ntev, tab sis tsuas yog kwv yees li 100-300 nucleotides hauv eukaryotes. Vim tias DNA polymerases tsis tuaj yeem pib DNA synthesis, txhua qhov Okazaki fragment yog primed nrog luv RNA.
Puas Okazaki fragments loj dua hauv eukaryotes?
Txawm hais tias muaj cov ntsiab lus DNA loj dua ntawmeukaryotic piv nrog cov cell prokaryotic, Okazaki fragments yog ∼1200 nt ntev hauv cov kab mob tab sis tsuas yog txog 200 nt ntev hauv eukaryotes (Ogawa thiab Okazaki 1980). Qhov no txhais tau hais tias txhawm rau npaj rau txhua tus tib neeg ntawm tes faib, >10 lab fragments yuav tsum tau ua thiab koom nrog.
Pom zoo:
Puas yog actinomycetes prokaryotes lossis eukaryotes?
Ob qho tib si kuj txawv ntawm cov fungi yog eukaryotes thaum Actinomycetes yog prokaryotes. Raws li prokaryotes, Actinomycetes tsis muaj nuclear-bound organelles (xws li nucleus, Golgi apparatus, thiab lwm yam) uas muaj nyob rau hauv cov kab mob fungal.
Puas muaj introns hauv prokaryotes?
Yooj yim prokaryotes thiab eukaryotes (xws li fungi thiab protozoa) tsis muaj lawv. Nyob rau hauv complex multicellular kab mob (xws li nroj tsuag thiab vertebrates), introns yog hais txog 10-fold ntev tshaj lub exons, lub active, coding qhov chaw ntawm lub genome.
Puas tawg hlab ntsha tawg?
Ib leeg hlab ntsha puas tuaj yeem ua mob rau kuv? Thaum cov hlab ntsha tawg tuaj yeem ua rau mob, lawv feem ntau tsis ua mob rau koj ob lub qhov muag lossis cuam tshuam rau koj lub zeem muag. Tej zaum koj yuav hnov qhov tsis xis nyob, xws li mob npub lossis txawm tias khawb qhov muag, txawm li cas los xij.
Puas yog pob txha tawg tawg?
Angulated– Ib qho tawg tawg qhov kawg ntawm cov pob txha tawg ntawm ib lub kaum rau ib leeg. Puas yog cov plaub hau puas tawg lossis tsis nyob? Ib leeg tsis muaj chaw tawg lawm: Cov pob txha tawg lossis tawg tab sis nyob hauv qhov chaw.
Puas yog cov prokaryotes sib txawv thiab dav?
Cov kab mob uas muaj cov kab mob prokaryotic tau muab cais ua ob Cov kab mob thiab Archaeayog cov kab mob sib txawv thiab nthuav dav tshaj plaws 3. Qhov twg yog cov prokaryotes ntau tshaj plaws thiab ntau haiv neeg? Tus domains Bacteria thiab Archaea yog cov uas muaj cov kab mob prokaryotic.
