Cov txheej txheem:
Video: Yuav ua li cas thaum lub sij hawm tsim ntawm Okazaki fragments?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Tsim ntawm Okazaki Fragments
Okazaki fragments yog tsim raws li lub lagging strand ntawm DNA yog theej. Ob chav helix yog qhib rau cov txheej txheem ntawm replication los ntawm DNA helicase. DNA helicase yog ib qho enzyme uas rhuav cov hydrogen bonds uas tuav cov DNA nyob rau hauv ob chav helix qauv
Khaws qhov no hauv kev txiav txim siab, Okazaki fragments tsim li cas?
Okazaki fragments daim ntawv vim lub lagging strand uas yog tsim yuav tsum yog tsim nyob rau hauv ntu ntawm 100-200 nucleotides. Qhov no yog ua tiav DNA polymerase ua me me RNA primers raws li lagging strand uas yog ua qeeb qeeb ntau dua li cov txheej txheem ntawm DNA synthesis ntawm cov strand.
Tsis tas li ntawd, cov haujlwm ntawm Okazaki tawg yog dab tsi? Okazaki fragment Function: Lub tsev thaiv rau DNA synthesis ntawm lub lagging strand. Ntawm ib qho qauv strand, DNA polymerase synthesizes DNA tshiab nyob rau hauv ib qho kev taw qhia deb ntawm replication diav rawg kev txav mus los.
Yog li ntawd, Okazaki fragments tsim nyob qhov twg?
Okazaki fragments yog tsim nyob rau hauv lub lagging strand kom DNA tuaj yeem ua ke nyob rau hauv qhov tseem ceeb 5' mus rau 3' yam ntawm lub lagging strand.
Vim li cas Okazaki fragments tsim nyob rau hauv DNA replication?
Cov okazaki fragments tsim thaum rov ua dua enables cov rov ua dua ntawm 3'5' (lagging strand). Lawv yog luv sequences ntawm DNA nucleotides tshiab synthesize ntawm lub lagging strand. Primase generates luv luv strands ntawm RNA uas khi rau cov coj strand ntawm lub DNA pib rov ua dua.
Pom zoo:
Yog vim li cas magnesium nyob rau lub sij hawm 3 ntawm lub sij hawm?
Cov qauv ntawm cov khoom hloov pauv thaum koj mus hla lub sijhawm. Thawj peb yog hlau, silicon yog loj covalent, thiab tus so yog cov molecules yooj yim. Sodium, magnesium thiab aluminium tag nrho muaj cov qauv hlau. Nyob rau hauv magnesium, ob qho tib si ntawm nws sab nrauv electrons koom nrog, thiab nyob rau hauv txhuas tag nrho peb
Lub square ntawm lub sij hawm lub sij hawm hu ua dab tsi?
Lub ib hlis ntuj 24, 2016. Txhua square ntawm lub periodic rooj muab yam tsawg kawg nkaus lub npe ntawm lub caij, nws cov cim, atomic tooj thiab txheeb ze atomic mass (atomic hnyav)
Cov naj npawb ntawm lub sij hawm lub sij hawm txhais li cas?
Tus lej saum lub cim yog atomic mass (los yog atomic hnyav). Qhov no yog tag nrho cov naj npawb ntawm protons thiab neutrons hauv ib lub atom. Tus lej hauv qab lub cim yog tus lej atomic thiab qhov no qhia txog tus naj npawb ntawm protons hauv lub nucleus ntawm txhua lub ntsiab lus lub atom. Muaj 18 lub ntsiab ntawm cov ntsiab lus nyob rau hauv lub sij hawm
Yuav ua li cas nce lub sij hawm lub sij hawm?
Los ntawm sab saum toj mus rau hauv qab ib pawg, electronegativity txo. Qhov no yog vim tus naj npawb atomic nce ib pawg, thiab yog li muaj kev ncua deb ntawm valence electrons thiab nucleus, los yog ntau dua atomic radius
Yuav ua li cas koj xam lub sij hawm nws yuav siv sij hawm mus ncig teb chaws?
Kwv yees seb koj yuav mus sai npaum li cas ntawm koj qhov kev mus ncig. Tom qab ntawd, faib koj qhov kev ncua deb ntawm koj qhov nrawm. Qhov no yuav muab rau koj anestimation ntawm koj lub sijhawm mus ncig. Piv txwv li, yog tias koj mus ncig yog 240 mais thiab koj yuav tsav 40 mais ib teev, koj lub sijhawm yuav yog 240/40 = 6hours